1. Types of Animals

2. Scientist classify the world’s animals into two major groups.

3. Scientist classify the world’s animals into two major groups. Vertebrates

4. Scientist classify the world’s animals into two major groups. Vertebrates Invertebrates

7. Worms don’t have a back bone so they are invertebrates.

8. Many animals have a hard outer shell instead of bones. That means they have no spine (backbone) and they are invertebrates .

9. Microorganisms are invertebrates.

10. Animals that have a backbone are called vertebrates . They include: mammals birds fish reptiles amphibians

11. Animals that have a backbone are called vertebrates . They include: mammals birds fish reptiles amphibians

12. Animals that have a backbone are called vertebrates . They include: mammals birds fish reptiles amphibians

13. Animals that have a backbone are called vertebrates . They include: mammals birds fish reptiles amphibians

14. Animals that have a backbone are called vertebrates . They include: mammals birds fish reptiles amphibians

15. Animals that have a backbone are called vertebrates . They include: mammals birds fish reptiles amphibians

16. Mammals are vertebrates that have certain characteristics.

17. Mammals have hair or fur.

18. Mammals are warm-blooded

19. Mammals give milk to their babies.

20. Mammals give birth to live young.

21. Birds are vertebrates that have certain characteristics.

22. Birds have feathers.

23. Birds are warm- blooded

24. Birds lay eggs.

25. Fish are vertebrates

26. Fish are cold-blooded

27. Fish live all their lives in water.

28. Most fish lay eggs.

29. Reptiles are vertebrates.

30. Reptiles have scales on their bodies.

31. Reptiles have lay eggs.

32. Reptiles are cold-blooded

33. Amphibians are vertebrates.

34. Amphibians have smooth skin (no scales).

35. Amphibians lay eggs.

36. Amphibians are cold-blooded

37. Amphibians are born in water and undergo metamorphosis .

38. Metamorphosis means change

39. Amphibians change a lot during their lives