Although Nile crocodiles resemble armored tanks with huge, teeth-filled mouths, these reptiles are unusually attentive parents. When a large male Nile crocodile spots a female that catches his eye, he ...

Five eggs the size of Ping-Pong balls crack open as the tiny desert tortoises inside break through the shells. The two-inch-long babies immediately crawl off in search of flowers and grasses to eat.