The extravagant cop Michael Dooley needs some help to fight a drug dealer who has tried to kill him. A "friend" gives him a dog named Jerry Lee (Officer Lewis), who has been trained to smell drugs. With his help, Dooley sets out to put his enemy behind the bars, but Jerry Lee has a personality of his own and works only when he wants to. On the other hand, the dog is quite good at destroying Dooley's car, house and sex-life...

The story of a boy, a dog, and a man. The boy discovers he is heir to a shipping line, and travels to Los Angeles, accompanied by inventor/radio operator Bob Whitlock and Irene Blaine. Their journey is aided by Pal, a wolf dog.

A German Shepherd puppy is "adopted" by a wolf pack in the snowy and frozen Great North and raised by them as one of their own. A few years later he comes upon a fur trapper and saves the man from certain death, and begins to feel a kinship with him that is stronger than the one he has with his adopted pack.

Rin-Tin-Tin is saved from the beatings of a trapper by Ed Nolan, a shiftless trapper himself, and 'Rinty" follows Nolan home to his cabin but refuses to enter. Nolan takes him to the home of Mary Mallory, the girl he has failed to win as his wife because of his ways, and in their mutual love of 'Rinty," a new understanding is born and Nolan goes to work.

Adapted from Dorothy Yost's story, "The Untamed Heart"

Our doggy hero is abandoned in the desert while in pup-hood. Upon reaching maturity, Tin Tin has undeservedly earned the reputation as a killer canine. Thus, the human characters spend most of their time hunting down the dog in hopes of collecting a huge bounty.

Paul Andrews returns from the World War with Buddy, a dog he found in Europe. Instead of getting a warm welcome, he finds his sweetheart, Caroline Blair, missing.

Slasher falls off the train that is carrying him. He is found, broken in spirit, by Donald Cass. The dog is regenerated by Donald's love.

The Three Mesquiteers are forced to track down a train robbery ring after some of the gang hijack their truck for a getaway and the police conclude they are part of the gang, an identification which is just fine with the gang's nameless chief.

Thangapandian, an honest forest officer, is transferred to a village. The village chief cuts illegally the sandalwood trees. Radha is brought up by her adoptive family. When she was young, her father, a famous singer, died in a car accident. Thangapandian falls in love with Radha. What transpires later forms the crux of the story.

A dog and a horse become unlikely allies when they attempt to thwart a crooked gambler from rigging a race.

The story of a champion sled dog named Kavik who survives a plane crash in the wilds of Alaska and is found and cared for by a young boy named Andy Evans. But the dog's owner finds Kavik and takes him back to his home in Colorado where the dog escapes and embarks on a 2,000-mile odyssey in search of Andy.