Animal classes can be divided into two main groups - vertebrates, which have backbones, and invertebrates, which do not have backbones. Vertebrates can be further divided into mammals, birds, fish, reptiles, and amphibians. Mammals are warm-blooded, have fur or hair, and their babies drink milk.

1. Animal Classes
Cimia Shock
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2. 2 Animal Classes
Groups of animals that are alike in important
ways
Vertebrates Invertebrates
√ Have a backbone × Don’t have a backbone.

3. Vertebrates3
Mammals
Birds
Fish
Reptiles
Amphibians

4. Mammals have backbones.
True.
False.
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5. 5

6. Mammals-Review
√ Warm blooded
√ Have fur or hair
√ Babies drink milk
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