Dog's Best Friend

A guard dog who protects an 80-acre horse farm becomes a best friend and guardian to a frail quarter horse.

A high-energy hound meets his match and finds the ideal playmate in a tiger cub named Thunder; in Oklahoma, a pit bull develops a tender bond with a two-tonne steer.

A 9000 pound elephant, Bubbles, loves to splash around in the pool with her bestie, an 80 lb black lab named Bella.

A golden lab is a constant companion and calming force for the cheetahs at the Columbus zoo.

A feisty dachshund named Abby is the dearest friend of a Barbary lion named Bonedigger.

Tink the two-legged dachshund and Henry the three-legged cat make for the perfect companions.

A rescue dog from Mexico becomes the leader of the pack and a best friend for life with an Arctic wolf.

When an outcast coyote pup is ignored by her pack, she finds friendship.

In Ontario, a poodle makes friends with a Maine Coon cat; in North Carolina, a Pekin duck bonds with a corgi and golden retriever.

A Weimaraner hunting dog is the towering protector and playful pal to a little guinea pig named Fanny.

An orangutan finds a best friend in a stray dog and five years later both are thriving.

Biggie the duck has found friends for life in Yogi the Corgi and Occy the English Retriever.

A squirrel-chasing Dutch Shepherd makes a special exception for his best friend and favorite playmate.