And, of course, all birds have feathers. Within those groups, there are endless species to discover and more mind-blowing facts about animals to uncover! Click through the gallery above to learn more.

5. Despite their reputation as dirty animals pigs are actually very clean. They will choose a small area of their enclosure as a latrine and always dung there, and nowhere else. Pamela ...

Some animals make that easy by preening, licking, and grooming themselves. But others seem not to care about getting dirty as they splash in puddles and investigate smelly garbage bags.