Three animals, three surprising friendships. Eden the rescue dog took in baby goat Elsa like her own. Nova, the bouncy pup, learned gentleness from her graceful horse friend, Athena. And little piglet ...

Heartwarming footage of a dog and bunny forming a playful and affectionate bond.

Have you ever seen a dog at the zoo? True, some zoos offer dog-friendly days when your pup can tag along with you, but it seems unheard of for dogs to live in the zoo alongside tigers and monkeys.