Mammals are vertebrates that have fur or hair, breathe with lungs, give live birth, and drink milk from their mothers. They come in a wide range of sizes from whales to mice. Birds are also vertebrates that lay eggs, have feathers and wings, and have beaks adapted for different diets. Fish are vertebrates that breathe through gills, have fins and scales, and live in water. Amphibians go through a metamorphosis where they use gills as juveniles and lungs as adults, and can live both on land and in water.

1. MAMMALS

2. There are all sorts of mammals.

3. They can be very big like whales
or elephants.

4. They can also be very small like
mice.

5. Mammals have a backbone.
They’re vertebrates.

6. Mammals have a protective
covering of fur or hair.

7. Mammals breathe in oxygen from
the air with their lungs.

8. Mammals have live babies. They
don’t lay eggs. They’re viviparous.

9. Mammals drink their mother’s milk
until they can find their own food.

10. Most mammals have four legs and
move on land.

11. Some mammals have flippers to
move in the water.

12. Mammals can be herbivores,
carnivores or omnivores.

13. They have different types of teeth
depending on what they eat.

14. BIRDS

15. Birds are vertebrates.

16. There are thousand of types of birds on
Earth. They can be big or small, and they
can be lots of different colours.

17. Birds breathe with their lungs.

18. Birds can be herbivores,
carnivores or omnivores.

19. Birds lay eggs. They’re oviparous.

20. All birds are covered in feathers and
have wings, but not all birds can fly.

21. All birds have a beak.

22. The eagle has a hooked beak for
tearing meat.

23. Birds that eat nuts and seeds have
short beaks.

24. Birds that
catch fish
have long,
sharp beaks.

25. Birds that eat nectar from flowers
have long, thin beaks.

26. FISH

27. Fish are vertebrates.

28. Fish have fins and scales.

29. Fish breathe through their gills.

30. Fish live in freshwater or in sea
water. There are fish that can live in
both freshwater and sea water.

31. Most fish are oviparous, but some
are viviparous.

32. Fish can be herbivores,
carnivores or omnivores.

33. AMPHIBIANS

34. Amphibians are cold-blooded
vertebrates.

35. Amphibians are oviparous and
they lay their eggs in the water.

36. Baby amphibians live and grow in
water and breathe through their gills
like fish.

37. In a process called metamorphosis,
baby amphibians change and grow
into adult amphibians.

38. 1 2 3
4 5

40. Adult amphibians live in water and
on land.

41. Adult amphibians breathe with their
lungs and absorb oxygen through
their moist skin.

42. Most amphibians are carnivores.