7: Pangolin
Pangolins are the only known mammal with scales. Their habitat covers parts of Central and West Africa, India and Southeast Asia. When threatened by predators, pangolins roll up into a defensive ball, protected by their armor-like coating of keratin scales. Sadly, these insectivores are one of the most illegally trafficked mammals in the world. Their scales are thought to have medicinal powers in parts of Asia, and though an international ban exists on their trade, the numbers of wild pangolin have dropped drastically as a result of poaching.