Most of them can fly.
They have a moist skin.
They have beak and two wings.
The dolphins are...
Their babies drink milk.
They have scales and fins.
Some of them have no legs.
They have two legs.
They breathe with gills when young, but late develop lungs.
The snakes are.
They born from their mother's womb.
They live in water.
They have feathers.
They have scales and a dry skin.
They breathe with gills.
The frogs are...
The sharks are...
They have fur or hair.
The penguins are...
