For the myth in GTA San Andreas, see Fire Dog.
Dogs are domesticated animals which are rumored to exist in physical form in Grand Theft Auto: Vice City, Grand Theft Auto: San Andreas and Grand Theft Auto IV. They made their official debut in Grand Theft Auto V.
Grand Theft Auto: Vice City
In Grand Theft Auto: Vice City, there is a poster, reading that there is a 25$ fine for curbing your dogs. The poster is located in the Abandoned Park. Another sign can be noticed, reading NO KIDS-DOGS AFTER 7 PM at the Greasy Chopper. These signs could be plausible references that dogs formerly existed in Vice City. Although dogs can't be found in the game or any internal files.
Grand Theft Auto: San Andreas
The first idea of Dogs was started even before the game's and YouTube's release. A large E-Mail fad showed a strange figure behind a man in the game's official trailer, however, after the game was released, players went to Santa Maria Beach and discovered the "black object" was in fact a chair.
The 1990 song Been Caught Stealing by the band Jane's Addiction can be heard on the in-game radio station, Radio X. Near the beginning of the song, dogs can be heard barking, and many players have mistaken the barking sounds for actual dogs in the game.
Grand Theft Auto IV
Dogs are reported to be roaming the streets of Liberty City. In an article on the Liberty City Tree website, it is rumored, along with the Middle Park Whale and other myths, that dogs can be found. Barking noises can be heard at night in alleyways supporting its existence, but the barking may just be part of the background ambiance noise of the city. There has yet to be any images that prove dogs exist in GTA IV. Pets, the common domesticated animals are referenced to an extent.The only animals seen in GTA IV are Pigeons (flying rats) and Seagulls. Various signs and posters are found in Liberty City. One sign says "Missing Cat: 500$ Reward" and another says something along the lines of "Pick up dog droppings: 500$ Fine".
Grand Theft Auto V
Dogs have been implemented into Grand Theft Auto V, and play a much larger role in the storyline. Lamar owns a Rottweiler named Chop, who stays with Franklin and plays a part in several missions. Dogs can be found in various areas around San Andreas including: Mirror Park, Sandy Shores, the Simmet Alley Railyard (only during the mission Chop, and Vespucci Beach.
Mysterious Labrador Retriever
In the game's story mode, Franklin encounters a mysterious Labrador Retriever that happens to appear whenever Dom Beasley is in trouble. His barks can be understood by Franklin in a manner reminiscent to Lassie. He never appears or interacts with the player outside of his two Strangers and Freaks encounters: Risk Assessment and Uncalculated Risk. It has been proven that the dog does not belong to Dom, as he expresses his disbelief towards Franklin when he says that a dog led him there. No explanation is given for the dog or its abilities, leading players to form their own conclusions about its nature. Interestingly, the dog's manner of appearing whenever Dom is in danger shares similarities to Mothman sightings.