Friendships also require active effort to flourish and sustain.

Who does not love puppies? It seems everyone in the animal kingdom loses it over puppies and this monkey is no exception.

Besties don't have to be the same height or speak the same language. Heck, they don't even have to be the same species.

Dogs make friends with many different species as they are always curious, compassionate, adaptable and fun-loving. Besides friendship with human, dogs are seen making friendship with elephants, lions, and emus. But it is rare to see a dog whose bestie is an owl!

At the Virginia Zoo, an unlikely friendship formed between a four-month-old cheetah cub named Kumbali and a puppy named Kago.

The female grey wolf and male brown were spotted every night for ten days straight, spending several hours together between 8pm and 4am.