Most are oviparous. Some keep their eggs in their mouths until they hatch.
Are oviparous. They lay eggs in water.
Babies look like adults when they hatch.
They breathe with their gills.
Babies change through metamorphosis and grow into adults.
Most have 4 limbs but some have no limbs.
They have fins and a tail which help them to move.
Their skin is covered in scales which protect their body.
Breathe with their lungs.
They eat small vertebrates and invertebrates.
Are oviparous. They lay eggs on land.
They can walk, run, slither or swim.
Babies breathe with their gills. Adults breathe with their lungs and through their skin.
They all have moist skin.