They crawl.
They use their large teeth to capture their prey.
They have four very short legs.
They are very large reptiles.
Many of them are aquatic.
They have four legs, and a body covered with hard scales.
They can extend their head, legs and tail through openings in the shell.
Most of them live on land.
They are small terrestrial reptiles.
They spend a lot of time in water.
They have long bodies with no limbs.
They slither.
They have a shell to protect their body.
They lay their eggs on land.
