1. LADY AND THE TRAMP

The spaghetti kiss from "Lady and the Tramp" will forever live on in movie history as one of the best kisses ever, animal or otherwise. A whole new generation is set to experience the magic of "Lady and the Tramp" when the live-action remake is released in November, but we are still not over the original 1955 animated version. This tale of star-crossed lovers: a spoiled cocker spaniel named Lady and a tough, street smart stray named Tramp — had a rare happy ending that has stuck with us for decades. And we are not exaggerating when we say that the spaghetti smooch is one of the most iconic movie kisses of all time.



2. BO AND SUNNY

Bo and Sunny are two of the most beloved presidential pets in recent history. After it was made public that President Obama had promised his daughters Malia and Sasha a puppy for dealing with the election, everyone started guessing what type of puppy they'd be getting. In April 2009, the world was introduced to Bo, a 6-month-old Portuguese water dog. The breed is hypoallergenic, as Malia is allergic. Four years later, then-First Lady Michelle Obama posted on Twitter about Sunny, another Portuguese water dog that was joining the family.According to the Wall Street Journal, requests for the breed increased "100% in the US and 122% in the UK" from the year prior to Bo's adoption.



3. HIGGINS

Most famously, Higgins played the titular role of Benji in the 1974 film. The original film spawned multiple sequels, including the recent 2018 reboot on Netflix. "Benji" was so universally beloved that even Alfred Hitchcock is said to have had a soft spot for the film. However, Higgins also appeared in 149 episodes of "Petticoat Junction," receiving a PATSY Award for his role. He also appeared in "Green Acres" and "The Beverly Hillbillies."



4. STRONGHEART

Credited with helping to popularize the German Shepherd breed, Strongheart's life story sounds like something out of a movie, though his heroic exploits were not strictly fictional. The German-born animal was trained as a police dog in Berlin and served bravely with the German Red Cross in World War I before migrating to the U.S., and straight to Hollywood. Born Etzel Von Oeringen, he was dubbed Strongheart by a movie studio publicity department that deemed his name too much of a mouthful for a screen star. And a star he did become: His performances in silent films including "White Fang" and "The Silent Call" earned Strongheart a star on the Hollywood Walk of Fame.



5. BALTO

In 1925, the town of Nome was hit with an outbreak of diphtheria, a deadly and contagious disease. The only antidote was hundreds of miles away in Anchorage and, thanks to bad weather and an abundance of snow, the only way to get it was by sled. While a relay of dog sleds passed the antidote off, the final leg was led by Balto, who heroically led his team through 54 miles of blizzards and temperatures of -40. When the team successfully made it to Anchorage to get the antidote, Balto was hailed a hero. In 1995, his story became the subject of an animated movie. He is also been immortalized by a statue in Central Park, and his taxidermied body is open to viewers at the Cleveland Museum of Natural History.



6. SNUPPY

The Afghan hound was the world's first cloned canine, born in 2005 in South Korea. There were 123 surrogate mothers for the clone produced from the cell of an ear of an adult Afghan hound, but just three produced pregnancies, and only Snuppy survived. Snuppy, who was carried by a Labrador Retriever surrogate mother himself produced four clones, as well as nine puppies via artificial insemination. He died at the age of 10.



7. BUDDY

Buddy, the first seeing eye dog, came to the U.S. in 1928. He had been trained in Switzerland by Dorothy Harrison Eustis for Morris Frank, a young blind man. Buddy demonstrated his skills in front of a crowd of news reporters by safely guiding Frank across busy Manhattan intersections. Frank founded the Seeing Eye Guide Dog School in 1929. Celebrating its 90th anniversary in January 2019, the school has provided guide dogs for more than 17,000 people who are blind or visually impaired. Astonishingly, tuition rates have not changed since the 1930s: $150 for the first dog, $50 for each subsequent dog, and just $1 for veterans of the military.



8. SERGEANT GANDER

A Newfoundland dog who was the mascot of the Royal Rifles of Canada, Gander served as a grenade sniffer during World War II. He was killed in action during the battle of Hong Kong, protecting a group of wounded soldiers, by carrying a grenade away from them toward enemy lines. The Gander Heritage Memorial Park in Newfoundland is home to a monument honoring Gander, who was also awarded the PDSA Dickin Medal, the highest award any animal can receive and the animal equivalent to the Victoria Cross.



9. OLD YELLER

The star of the 1957 movie Old Yeller was a canine actor by the name of Spike. He was famous the world over for his stunning performance in the popular Western drama. The Mastiff / Labrador Retriever Spike was, like Old Yeller himself, a stray, rescued as a puppy from a shelter by a dog trainer.



10. SNOOPY

If every you need cheering up in life, this adorable cartoon Beagle portrays a joyful, good-natured and carefree attitude, with his vivid imagination of fantasy lives. Besides the 1950s comic strip, Peanuts, in which he first came to prominence, the anthropomorphic Snoopy has featured in TV shows, movies, parades and even a musical, You are a Good Man Charlie, Brown.








A D V E R T I S E M E N T










11. TRAKR

This German Shepherd was a Canadian survivor detection dog, handled by police officer James Symington, who tracked down the last survivor of the 9/11 World Trade Center attack. More than 300 search-and-rescue dogs were involved to help find survivors from the rubble. Trakr discovered a woman, Genelle Guzman, who had been trapped under concrete and steel for 26 hours. He suffered chemical and smoke inhalation, burns and exhaustion, causing him to collapse though he was revived with intravenous fluids. Trakr became an overnight hero and many years later was selected to be cloned, in 2009, and five mini Trakrs were born: Trustt, Solace, Valor, Prodigy and Deja Vu.



12. HACHIKO

Known as the most loyal dog of all time, Hachiko was adopted by a professor as a puppy. Every day the professor commuted to and from work at a railway station in Japan called Shibuya Station, where Hachikō learned to wait for his return each day. Sadly, one day the professor had a hemorrhage and passed away at work; he never returned to Shibuya Station. Heartbroken Hachikō continued to return to the station day after day, patiently waiting for his owner to come home to him. He is now a national symbol of loyalty in Japan, and even has several tear-jerking movies written about his story.



13. RUFUS

Despite his association with Bulldogs, British prime minister Sir Winston Churchill adored his brown Poodles, named Rufus I and Rufus II (the II was apparently not pronounced). He acquired the original Rufus during World War II, and the dog accompanied him on many adventures such as sailing across the Atlantic. However, the Poodle was sadly killed in a road accident, after which Rufus II arrived.



14. BARRY

For hundreds of years, the sturdy dogs raised by the monks at Great St. Bernard Hospice in Switzerland assisted countless travelers making their way through the snowy St. Bernard Pass in the Western Alps. Between about 1670 and 1897, the dogs, which came to be known as St. Bernards, were credited with saving more than 2,000 lives. One animal in particular, Barry, did more than his share, saving more than 40 lives between 1800 and 1812. To this day, visitors to the Natural History Museum in Berne can see Barry's remains on exhibit.



15. BOLT

John Travolta has been in some seriously popular films. Think "Pulp Fiction," the ground-breaking, bucks-raking indie film that grossed more than $200 million and earned him a second Oscar nomination. Travolta extended his cinematic winning streak into the 21st century by lending his voice to the top-grossing dog film of all time: "Bolt," a sweet road movie that pulled in $310 million.



16. LAIKA

It is not just humans who have ventured outside of Earth’s atmosphere. Laika was a stray terrier-husky mix who was the first canine to travel to space and the first animal to orbit Earth. In November of 1957, she was launched in a Soviet spacecraft into space from Moscow, Russia. Unfortunately, due to a malfunction in the oxygen supply and heat levels of the spacecraft, Laika passed away soon after launch. Many have criticized the decision to send an innocent pup into space against her control. Laika is now remembered as one of the most famous dogs in history and as a pioneer in space expansion. Her memory has been preserved by a monument in Russia, as well as a postage stamp, books and poems.



17. BOBI

The world’s oldest dog, according to the Guinness World Records, died in 2023 at the age of 31 years and 165 days. He lived in Conqueiros, Portgual, with the Costa family. He was a pure-bred Rafeiro do Alentejo, a Portuguese farm dog. Bobi was lucky to be alive at all. Born into a litter of four puppies, his human family decided they already had too many animals and were planning to put the pups to sleep. However, he was hidden in a woodpile when the puppies were collected and the children kept his existence a secret until it was too late for him to be euthanized.



18. QUEEN ELIZABETH's CORGIS

The British monarch received her first corgi in 1933, and has owned more than 30 in the decades since then. They were by her side in countless photos, from royal portraits to casual snaps to the cover of Vanity Fair. They accompanied Queen Elizabeth II on her travels, including her honeymoon and have been sculpted into official statues and embossed onto commemorative coins. One of the royal corgis even appeared with Daniel Craig in the James Bond opener to the 2012 London Olympics. Though the last of the queen's corgis died in 2018, they won't be forgotten. A new animated film, "The Queen's Corgi," is slated for release in July.



19. LASSIE

Lassie, the main character of a beloved, timeless film as well as an extremely successful television series is, without a doubt, one of the most famous pups in the world. Lassie was originally played by a Rough Collie named Pal, and it was shocking to some that although the fictional Lassie is a female, all dogs who played her were males. After Pal passed away, every pup who starred as Lassie was from his bloodline. Lassie's 19-season-long television series premiered in the 1940s and the final film, Lassie, was released in 2005. It is rumored that through Lassie Come Home, Pal made almost twice as much from his cinematic career than his human co-star Elizabeth Taylor.



20. CAIRO

Cairo, Time magazine's Animal of the Year for 2011, earned his place in history as part of SEAL Team Six, which took down Osama bin Laden. His reported role in the mission was sniffing out explosives or possibly finding a hidden room. The Belgian Malinois was lowered into the compound from a helicopter, and along with a translator and four SEALs, he closed off the perimeter of the house while other SEALs went inside. Later, when the SEALs visited the White House, President Obama asked to meet the valiant dog, and had a chance to pet him.



21. TOTO

If you have seen The Wizard of Oz, you may recognize lead character Dorothy's adorable Cairn Terrier named Toto who she is addressing in her iconic line, "Toto, I've got a feeling we are not in Kansas anymore". The talented pup who played him was named Terry, who was abandoned as a puppy and rescued by a Hollywood dog trainer. Before playing Toto alongside Judy Garland, Terry had extensive experience in the spotlight. Terry lived to be 11 years old, and her career consisted of starring in a whopping 17 movies. Terry was apparently paid $125 a week for her role in the 1939 movie Wizard of Oz, more than some of her human co-stars.



22. BOO

As social media grew and grew, so did the world of new virtual influencers and celebrities. Boo the Pomeranian was one of them. When Boo's owner started posting photos and videos of him online, he was an instant sensation. He was repeatedly named the "cutest dog in the world." Although he passed away in 2019, he had almost 20 million followers on his social media accounts. Boo was one of the first canine social media celebrities, and has several books, toys, and more made in his honor.



23. GROMIT

Has there ever been a Claymation creation cuter than Gromit the dog? The four-legged partner in such Wallace and Gromit adventures as "The Wrong Trousers," "The Curse of the Were-Rabbit" and "A Grand Day Out," Gromit traveled to the moon, saw through the machinations of an evil penguin and survived encounters with Wallace's inventions. If you've ever suspected that most pets are smarter than their owners, check out Gromit's interactions with Wallace for confirmation.



24. BEETHOVEN

St. Bernard dogs may be known for saving lives, but they are also pretty good at generating laughs and warming hearts. Case in point: Beethoven, the starand namesake of a series of much-loved movies. The first one, 1992's "Beethoven," earned a spot on several lists of all-time best dog movies, including Us Weekly and USA Today. The sequel, "Beethoven's 2nd", was also a popular and financial success ($118-plus million, compared with the original’s $147-plus million). The two big-screen hits were followed by several made-for-video features.



25. OWNEY

This charming mutt traveled anywhere a stamp could take him, accompanying the U.S. mail on wagons, railroad cars and aboard ships. An unofficial mascot of the U.S. Postal Service, toward the end of the 19th century Owney crossed the country with mail trains multiple times, and went around the world on steamships. He was considered a good luck charm by postal workers, who awarded him medals and tags documenting his journeys. Appropriately enough, Owney has appeared on a postage stamp, and is the star of an exhibition at the Smithsonian Postal Museum in Washington, DC.



26. JIFFPOM

This lovable social media sensation has over 20 million TikTok followers, and over 9m on Instagram, with images devoted to the cute pup dressed up in, sitting in a handbag, drinking chai lattes and so on. Jiffpom, an adorable Pomeranian, had many strings to his bow. Besides earning over $46,000/ £37,000 per post, he held Guinness World Records for the fastest 10m run on hindlegs and the fastest 5m on front paws. He has also starred in a handful of movies. Jiffpom, who was born in 2010, has not had his death officially confirmed, but following a lack of posts he is believed to have passed away in 2022.



27. RIN TIN TIN

Rin Tin Tin is arguably one of the most famous German Shepherds of all time, starring in over 30 films. He was rescued in France by an American soldier during World War I and brought to Los Angeles, where a Hollywood filmmaker happened to notice his ability to jump 12 feet in the air. Rin Tin Tin's unique talents made him a movie sensation. He was so successful that he was eventually named the unofficial mascot of Warner Bros Studios!



28. CHECKERS

Politicians make a lot of speeches, and lots of politicians own dogs. But it is rare that the two come together as they did in one famous political speech. Richard Nixon, a vice presidential candidate at the time, delivered his famous Checkers speech in 1952, denying financial improprieties. But he declared he would keep one gift: the black and white spaniel his daughter had named Checkers. He became an instant celebrity and some even say it was he who saved Nixon’s political career at the time.



29. SINBAD THE SAILOR

This decorated war veteran served for 11 years on the US Coastguard Cutter Campbell from 1937–1948, and lived to the age of 14. He saw combat in World War II, and was aboard the ship when it sank the German submarine U-606 (though Sinbad was kept below deck to protect him from the noise of gunfire).It is not entirely clear what his purpose was, other than morale-boosting company. Certainly, he caused havoc on some of the crew’s visits to ports and was said to join in with this crew mates’ drinking of coffee and whisky.



30. MARTHA (my dear)

Paul McCartney's Old English Sheepdog Martha features in the Beatles' White Album song, Martha My Dear. At the time of its 1968 release, fans assumed Martha was a smokescreen for his deteriorating relationship with old flame Jane, but Paul himself later set the record straight to clarify it was indeed about a song about a dog. Martha, originally named Knickers, was his first pet, and she lived until she was 15 years old.



31. PULASKI'S MASTERPIECE

The silver-grey Poodle was once billed as the world's most valuable dog, said to be worth $20,000 in the 1940s, with a stud fee of $500 and thousands of dollars in modelling fees. However, Alexis Pulaski's home-bred poodle, a multiple winner in the show ring and the first toy dog to win championships, obedience and utility titles, went missing in 1953 from Pulaski's pet shop and was never seen again, despite a major media campaign.



32. Mr FAMOUS

Owned by Audrey Hepburn, this mini Yorkshire Terrier could hardly have been better named. He starred in a cameo role alongside his owner and Fred Astaire in Funny Face (1957), and accompanied Hepburn all around the globe and was often pictured in her bicycle basket. Mr Famous was photographed by Cecil Beaton and graced many a magazine cover.



33. ABUTIU

An Ancient Egyptian dog known to be one of the first domesticated, named dogs. Abutiu, who lived around 2,300 years before Christ, was a royal guard dog who received a ceremonial burial. All we know about Abutiu is thanks to a stone tablet from the burial ground but neither the grave nor the mummy have been discovered. He was described as what we recognize as a sighthound – a lightly built Pharaoh hound type. Dogs are documented to have been protected animals and were mummified after their death in the family tomb.



34. CAESAR

The British King Edward VII was especially fond of his Wire Fox Terrier Caesar – also known as Stinky. Born at the turn of the 20th century, Caesar was the King's constant companion, even sleeping in a chair by the King's bed and having his own personal footman. He wore a collar with the words, "I am Caesar. I belong to the King." He was immortalized in a Fabergé model, made of chalcedony, rubies, enamel and gold. Caesar outlived the King, and was distraught when his master died. He attended the funeral and preceded several other kings and heads of state near the front of the funeral procession.



31. NEMO

Nemo served as a sentry dog in the Vietnam War at the Tan Son Nhut Air Base Thanks to dogs' incredible sense of smell and hearing abilities, sentry dogs could alert their human counterparts to the presence of enemy soldiers even when the dogs could not see them. On December 4th, 1966, Nemo alerted the approach of Vietnamese soldiers and helped his handler successfully defend the base. However, during the fight, a bullet entered Nemo's eye and exited out of the side of his snout, resulting in him permanently losing his eye. Despite this, Nemo heroically protected his badly wounded handler, lying over him to ward off any other threats until help arrived. After the incident, Nemo was retired, and as a decorated war veteran, Nemo accompanied recruitment officers, hoping to gain K-9 enlisters. At his death in 1972, Nemo received a proper burial, with his tombstone inscribed, "May all who hear the story of Nemo, know the true measure of man's Best Friend." Today he is considered not only one of the most famous dogs in history but one of the greatest war veterans.



35. BUDDY (air buds)

Buddy, star of "Air Bud" spawned multiple sequels, spin-offs, and books. He also inspired us all to try and teach our dogs how to play basketball. The plot of "Air Bud" is simple: a Golden Retriever escapes from his owner, an evil clown, and starts playing middle school basketball, leading his team to victory. A tale as old as time. After the success of "Air Bud," it turned out that Buddy was great at almost every sport, including football, soccer, baseball, and volleyball, leading to a variety of spin-offs. The hunger for sports-playing dogs didn't end with those films, though. A spin-off series called "Air Buddies," about Buddy's puppies, has inspired seven more films.



36. SANTA'S LITTLE HELPER

Santa's Little Helper was introduced on the very first episode of "The Simpsons" when he is adopted by Homer and Bart. For 30 years, audiences have watched as Santa's Little Helper has fathered puppies, passed obedience school, trained as a police dog, become the mascot for Homer's beloved Duff Beer, and was given away to an ostrich farm (though, of course, he came back). Santa's Little Helper is one of few cartoon dogs that simply acts like a regular dog, and for that, we love him.



37. CHIPS

Chips was a mixed breed dog with parentage from German Shepherd, Collie, and Siberian Husky. He was donated by his owner to be trained and used as a sentry dog in World War II. He became well-traveled during his time in the military, serving in France, Italy, Germany, and North Africa. Chips is remembered for saving his handler by attacking four men who were firing a machine gun at American forces. The men ended up surrendering to American troops. Chips was awarded many military awards for his bravery, including the Distinguished Service Cross and Purple Heart. After being discharged from service, Chips was returned to his family in New York.



38. WISHBONE

Wishbone made kids care about literary classics like "The Odyssey," "Don Quixote," and "Pride and Prejudice." Wishbone was a literary-minded Jack Russell terrier that frequently daydreamed about himself as characters from classic works of literature. His show, aptly titled "Wishbone," aired on PBS from 1995 to 1997, though it continued to garner fans in re-runs. "Wishbone" earned praise for not censoring or dumbing down the material it adapted, and earned a Peabody and multiple Emmys.



39. SERGEANT STUBBY

Sergeant Stubby (1916 – March 16, 1926) was a dog and the unofficial mascot of the 102nd Infantry Regiment and was assigned to the 26th (Yankee) Division in World War I. He served for 18 months and participated in 17 battles and four offensives on the Western Front. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and allegedly once caught a German soldier by the seat of his pants, holding him there until American soldiers found him. His actions were well-documented in contemporary American newspapers. Stubby has been called the most decorated war dog of the Great War and the only dog to be nominated and promoted to sergeant through combat.



40. JOFI

The Austrian neurologist Sigmund Freud was extremely fond of dogs, and particularly Chow-Chows. Jofi, a Chow-Chow, was always at his side, including when Freud was running therapy sessions. He claimed that Jofi's demeanor would help him to understand how anxious a patient was – plus she knew when the session time was up! Jofi died in 1937, a few days after an operation, and although Freud was distraught, he acquired another Chow, by the name of Lun.



41. FALA

President Franklin D. Roosevelt's dog Fala is the only pet to be rendered in a presidential monument in Washington DC. The Scottish terrier went everywhere with his owner, and was something of a media darling, appearing in newspapers, cartoons, books and films. Fala even became the subject of a political smear, when President Roosevelt's opponents falsely claimed the dog had been accidentally left behind in Alaska and a Naval ship was dispatched at great expenseto rescue him.



42. GREYFRIARS BOBBY

In his early years, Bobby accompanied his owner on his rounds as a night watchman on the Edinburgh police force. At a glance the little Skye Terrier may not have looked like much of a watchdog, but what he lacked in size he made up for in loyalty. After his owner's death, Bobby kept watch at his grave in Greyfriars Kirkyard for 14 years; he was fed and cared for by local people till the end of his days. A monument was erected in his honor across from the cemetery where Bobby held his faithful vigil. Some historians dispute this account and claim the whole story was a hoax to draw tourists in. Whatever the truth is, Bobby is still a very famous dog.



43. BOBBIE

You might see Bobbie referred to as "Bobbie the Wonder Dog," and for good reason. This Scotch Collie and English Shepherd mix traveled with his owners from Oregon to visit family in Indiana. However, after their arrival Bobbie was attacked by multiple other dogs and ran away. The family desperately searched for him, but they were unsuccessful. Only 6 months later, though, Bobbie showed up at his home in Oregon, dirty and a little worse for the wear. It is believed that he walked the entire distance, some 2,551 miles, or around 14 miles per day.



44. GIDGET

Gidget is the real name of the well-known Taco Bell Dog in the 1990s and early 2000s. Gidget served as the mascot of Taco Bell for around 4 years, until she was removed as the mascot and the marketing campaign was ended due to poor sales and many people taking offense at the caricature of Hispanic people that the dog seemed to represent. Gidget starred in multiple movies as well, including in Legally Blonde 2: Red, White & Blonde, in which she played the mother of Bruiser the dog.



45. CUT AND BALL

Like many of the British Royal Family, King Henry VIII adored his dogs, and was particularly fond of Spaniels, Beagles and Greyhounds due to his penchant for hunting. His hounds wore spiked velvet collars, and his coat of arms. Two dogs stand out, by the names of Cut and Ball, who were particular favorites because when they once got lost, he offered generous sums of money to find them.



46. UGGIE

This adorable Parson Russell Terrier started out life being rejected by two owners on account of his wildness and embodied a true rags-to-riches story when he became a star of the silver screen. His performance in the silent film The Artist (2011), which won five Oscars, provoked fans to clamor for animals to receive the coveted film awards. He also has a memoir out in print, Uggie, My Story.



47. SCOOBY DOO

The lovable Great Dane first appeared on our TV screens in 1969, and is still solving mysteries in his comic style. The movie Scooby-Doo, released in 2002, is among the biggest canine box office hits of all time.



48. PERITAS

King and military commander Alexander the Great is recorded as having around 150 dogs, but Peritas is perhaps the most famous of all, known to accompany him on his military exploits, fighting lions, hunting stags and the like. Peritas, like Alexander's horse Bucephalus, had a city named after him, one of the king's spoils of war. History does not relate what breed Peritas (which comes from the ancient Greek word for January) was, but it is likely to have been a type of Greek hunting dog as featured in mosaics of that era.



49. NIPPER

Nipper was a terrier mix dog from Bristol, England. He was the model for a famous painting called His Master’s Voice, in which the dog looked into a gramophone with an expression of curiosity on his face. This picture became the inspiration for the company trademark for multiple gramophone companies, like Berliner Gramophone and all of its subsidiaries. This trademark is most recognizable today as the trademark for RCA Records. Nipper was given his name because of his habit of nipping at the ankles and legs of visitors to his English home.



50. BOTHIE

Some dogs get everywhere. This long-haired Jack Russell Terrier was the first dog to travel to both the north and south poles. Owned by the British explorers Ranulph and Ginny Fiennes, Bothie accompanied them on their Transglobe Expedition (1979–1982). The canine polar explorer was kitted out with a coat, balaclava, face mask and booties, but the tough little terrier hardly needed them. His role on the trip? A friend and welcome distraction, bringing "a sense of home and normality" to the adventure. No other dog is likely to emulate him as dogs have since been banned in the Antarctic to protect the seals.



51. MILLIE

Millie, full name Mildred, was the pet dog of George H. W. Bush and wife, Barbara. She has been referred to as "the most famous dog in White House history" for multiple reasons. She was referenced in a speech by her famous owner as knowing more about foreign affairs than the two men that Bush was up against in his bid for re-election, Al Gore and Bill Clinton. She appeared in multiple episodes of TV shows, authored a book, and gave birth to a litter of puppies, one of which went on to live in the White House with George W. Bush. Millie has a dog park in Houston, Texas named after her.



52. PAVLOV'S DOG

Pavlov (1902) started from the idea that there are some things that a dog does not need to learn. For example, dogs do not learn to salivate whenever they see food. This reflex is "hard-wired" into the dog. Pavlov showed that dogs could be conditioned to salivate at the sound of a bell if that sound was repeatedly presented at the same time that they were given food. Pavlov's studies of classical conditioning have become famous since his early work between 1890 and 1930. Classical conditioning is "classical" in that it is the first systematic study of the basic laws of learning (also known as conditioning).