The descendants of one thought-to-be extinct species have apparently been chilling on the side of a volcano, eating grass for the last few hundred years.

REPTILES
Meet the Gila monster, the largest native lizard in the United States. But watch out for its venomous bites.
If a limbless reptile like the one above crosses your path, it’s obviously a snake, right? Maybe not.
New evidence suggests that prehistoric turtle shells served a different purpose than we originally believed.
Flamboyant and reclusive in equal measure, this iconic lizard can bluff like a poker champion.