When danger looms, the tiny and spiky armadillo lizard curls its body into a ball and bites its own tail — on purpose!

A giant, fork-tongued lizard with razor-sharp teeth. And a bite with bacteria-laced venom that's seeping into your flesh.

Komodo dragons, also known as Komodo monitors, are the largest lizards in the world. As adults, they have an almost-uniform ...