What are vertebrates?
animals with backbones
List the characteristics of mammals:
warm blooded, have backbone, produce milk, breathe with lungs, have hair, most have 4 limbs, most give birth to live young
What are 2 uses for hair on mammals?
to keep them warm, and also helps them hide from enemies
What are the largest group of mammals?
What glands on a female mammal produce milk?
What are herbivores?
What plague did people in Europe die from because of rats?