This small gray-green lizard has a very cool protective mechanism - it can decrease in size, hiding from the eyes of predators and muggles. From the skin of this lizard wizards make wallets, which compress when the thief approaches. So that only one who can get the contents is the owner. One of these purses Hagrid gave Harry for his seventeenth b-day!

Usually the tail of this lizard is large and flat, but in the illustration you can see how it reduced its part to come through the roots.