Dog

Dogs are a recurring race of animals in the Legend of Zelda series. Dogs are often the pets of other races.

The Legend of Zelda: Link's Awakening
Dogs can be found in the streets of Mabe Village. If Link attacks a dog, it is angered and quickly counterattacks, causing one heart's worth of damage if it hits Link. After damaging Link, the dog returns to its docile state. This is reminiscent of other animals in series, as some retaliate if Link attacks them.

The Legend of Zelda: Ocarina of Time
When Link is a youth, Mamamu Yan and her dog, Richard, can be found in the main market square of Hyrule Castle Town. At night, the market square is overrun with packs of dogs. If Link finds Richard among the various stray dogs, he can return him to Mamamu Yan, who gives Link a Piece of Heart. The dog in question can be found behind the market booth nearest the southern entrance to the market.

When Link awakens after having been sealed away for seven years, Hyrule Castle Town is ruined, and the dogs are nowhere to be seen; their fate is never ascertained. Mamamu Yan, who has moved to Kakariko Village, mentions that her dog, Richard, died sometime during the seven years that passed.

The Legend of Zelda: Majora's Mask
There is a Doggy Racetrack at Romani Ranch, where dog races are held. Link must choose one of the dogs found inside the pen and bet on whether or not it will win the next race. The Mask of Truth can be used to find the winning dog by talking to each dog and finding out which one thinks it'll win. There is also a small dog who appears to be Romani's pet. When the invaders appear during the night of the First Day, he runs around barking at them.

There is also a lone dog found in South Clock Town. The dog reacts differently to Link, depending on which transformation mask he is wearing. For example, while Link is wearing the Deku Mask, the dog attacks him. While wearing the Goron Mask, dogs growl then try to run away from Link. While wearing the Zora Mask, dogs run to Link, possibly because Link smells like fish.

The Legend of Zelda: Oracle of Ages
The only dog in the game is found in Mamamu Yan's house, located in southwestern Lynna City. Mamamu Yan wants to show off her dog, however, it is shy. If Link gives her the Doggie Mask for her dog, she will give Link a Dumbbell in exchange. This is part of the quest for the Noble Sword.

The Legend of Zelda: Twilight Princess
Dogs can be found roaming around Twilight Princess. They serve no important purpose, but Link can pick them up. Also, if Link finds a bone and throws it, the dog will run and fetch the bone, bringing it back to Link. If Link throw the bone behind a tree, sometimes the dog will bring back Rupees instead. When Link is in wolf form, dogs can be spoken to.