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 ...

National Geographic program features animal odd couples. Jan. 13, 2011— -- There are some friendships that defy explanation. One of nature's fiercest cats isn't supposed to fall for a ...

Have you ever seen a dog at the zoo? True, some zoos offer dog-friendly days when your pup can tag along with you, but it seems unheard of for dogs to live in the zoo alongside tigers and monkeys.