Largest worm-lizard

Worm-lizards or amphisbaenians look very similar superficially to earthworms, most are limbless, and they spend much of their lives underground. The largest species is the white worm-lizard Amphisbaena alba, which grows to a length of approximately 75 cm. It inhabits the rainforests of northern South America as well as the island of Trinidad, where it is often found in association with leafcutter ants. Worm-lizards were once deemed to be taxonomically separate from both lizards and snakes, and were therefore housed in a reptilian suborder all to themselves. However, more recent studies have demonstrated that they are indeed lizards, albeit highly specialized ones, so are nowadays housed within the lizard suborder. They derive their alternative name of amphisbaenian from the legendary amphisbaena, a snake-like creature but with a head at both ends of its body, because it is very difficult to distinguish the head end from the tail end in worm-lizards.