Black and white footage of a happy couple giggling and drinking under a tree.

Slow motion footage of two polar bears playfully wresting on frozen plain.

Rwanda: A baby gorilla on its mother's shoulder in a forest. The mother and baby put their faces together in a tender gesture.

Slow motion footage of two polar bears playing on a frosty plain, they wrestle and bite each other playfully.

Various shots of a lion cub playing in the arms of an adult lioness. Lion cub attempts to jump on adult lion's back. Lake Manyara National Park, Tanzania, Africa.

A young mountain gorilla suckling from its mother, camera tilts up to show the mother's face as she's feeding. She looks thoughtful.

France: Various shots of a group of friends greeting each other with handshakes and kisses on the cheek.

Brown bear mother and its three cubs walk by a pond. One of the cubs runs nearer to the camera, rises on its hind legs and then quickly runs back to its mother and siblings.

Brown bear mother and its three cubs walk by a pond, all looking very happy.

Various shots of a lion family. A lion cub jumps onto an adult lion and tumbles off landing on its back. Two lion cubs begin to play fight with one another. Lion cub licks and paws the nose of a sleeping adult lion. Lake Manyara National Park Tanzania, Africa.

Brown bear mother and three cubs walk by a pond. One of the cubs wades through water.

A lioness playing with its cub in a zoo enclosure. The cub then goes to play with its sibling and starts playfully biting it.