“The young rhino was between three and four years old ... In just the last few years, researchers have found ancient wolf pups, “pygmy” mammoths, birds, foals, and more.

Adorable three-month-old pygmy hippo, Petunia, and her mum, Iris, are making a big splash at Metro Richmond Zoo in Virginia. Conservationists say fewer than 2,500 mature pygmy hippos are left in ...