Xenarthra is an order of mammals that includes armadillos, sloths, and anteaters. Characterized by their unique joints in their vertebral columns, these creatures are mostly found in the Americas.

Certain species of animals and fish simply don't do well in captivity. Here are some animals you can never see at the zoo. Why can’t you see some animals at the zoo? People visit zoos and ...

New research on armadillos reveals how DNA shuffling rates evolve. These ancient mammals have surprisingly similar rates, despite millions of years of divergence, and generally lower rates than most ...