A String of Diamonds

The disinherited nephew of an aviation magnate plots to get a share of his uncle’s millions. He causes the near-death of his cousin when a bomb placed in his plane explodes in mid-air. He then hires thugs to abduct the uncle in order to force him to give over part of his fortune, but is foiled by the arrival of a cousin and police.

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.

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.

Gary and his dog Pal are having fun working on make-believe crime cases, though Gary's father, a city detective, disapproves. Gary and Pal soon find themselves involved in a real case involving fur thieves.

A woman and her weakling brother inherit a mine. When the brother commits suicide the guide is accused of murder.

The story of street children and the dog who penetrate into the fast food restaurants at night and catching terrorists in spare time.

A young boy goes to desperate lengths to save the family dog when his father agrees sell it to the local butcher.

Silent version of the classic Jack London tale.

A boy tries to protect his dog, a German shepherd that served with U.S. Army forces after it begins attacking strangers several years after the war.

Rin-Tin-Tin leaves his usual far north and ranch settings for Africa.

A dog and his dead master's brother track down murderers.

Jimmy lives in the tranquil town of Eagle Rock, Louisiana, with his father, stepmother and his best friend Rainy, a German Shepherd. When Jimmy's father gets a promotion, the family must relocate to an apartment in New York City that has a strict no pet policy. Unwilling to let his master go without a fight, Rainy embarks on a cross-country journey to New York but navigating the Big Apple is just the beginning of his challenging adventure.

In a small western town, a man meets a girl whose father is a land agent. To please her, he buys a plot of land from her father. Next thing he knows, he's mixed up in a plot to drive him off his land.

Lightning the German Shepherd dog stars in this wilderness melodrama.

Bill's separated from his litter, making friends with the wild creatures until he's found and adopted by young Kathie. An accident separates him from her, and he's drafted into K-9 duty in the trenches until battle fatigue takes its toll and he turns vicious. And even though he finds his way back home, he may be condemned as a killer.

A dog is stolen from his home in England and shipped to Canada to become a sled dog. Based on the novel by Jack London.

Fangs of Wolfheart is a silent Western

The Big Stunt is one of the Wolfheart hero dog Western series.

Gabe and Kylie hunt for lost pirate treasure, hoping to bring tourists to their sleepy Florida town — and save Gabe’s mom’s diner. When they find a precious sapphire, they’re helped by R.A.D.A.R., a clever dog who’s actually a robot! But the mad scientist who invented the treasure-hunting dog wants to steal him back — along with the town’s famous sapphire! Can Gabe and Kylie protect the dog, guard the jewel, and save the town?

Kazan, a dog who reverts to the life of the wild when his master is killed, becomes docile when he develops a loyalty to a girl in distress.