EVEN MORE UNUSUAL FRIENDSHIPS

Everyone knows who Koko the gorilla that speaks sign language is.

For her birthday one year, she signed to her teacher that she wanted a kitten.

Koko's teacher wasn't surprised, as Koko's two favourite books were about cats.

They adopted one from an abandoned litter and Koko showed it tender care and gentleness.

A lioness abandoned by her pack decides to adopted a baby impala

after killing its mother. Several times, she tried to leave the baby in the

company of other impalas, but ended up having to take the baby back under her

wing after the adult impalas were frightened away by her.

A giraffe and ostrich form an odd friendship at

Busch Garden's in Florida

A baby impala was left behind after the rest of its group ran away from the cheetahs.

Instead of preying on the impala, they played gently with it a bit

before simply getting bored and leaving it.

This pair have been seen together for over a year in Lake Van, Turkey.

They were first spotted by local fisherman who witnessed them sharing

a fish and playing together.

At the TIGERS institute in South Carolina, a chimp raises tiger cubs

after they were separated from their mother.

A photographer witnessed a wild polar bear coming upon tethered

sled dogs in the wilderness of Canada 's Hudson Bay . Instead of

devouring the dogs, they played and cuddled. The polar bear

returned every night that week