In humans, personality similarity between partners can lead to better compatibility and well-being. Is the same true for ...

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 ...

The zoo said the species is endangered and faces threats including "habitat loss, deforestation and climate change." ...