The plight of a young, abandoned macaque monkey in Japan has tugged at heartstrings around the world. If we recognise animals' capacity for distress, what responsibility does that entail?

There's surely a reason we all went briefly nuts about a lonely little snow monkey called Punch living in a Japanese zoo.

Punch the Monkey who stole the world's hearts with his stuffed orangutan has made a new friend and we can't get enough.

An orphaned monkey using a puppy as his jungle gym. A dog and a fawn lovingly grooming each other. A pit bull and a pig cuddling up for a nap. In the animal kingdom, there are unlikely relationships ...