Mammals

Which of the following animals is not a mammal?

• Dog

• Cat

• Frog

• Human

What is a characteristic that all mammals share?

• They lay eggs

• They have feathers

• They have fur or hair

• They are cold-blooded

How do mammals regulate their body temperature?

• By basking in the sun

• By being warm-blooded

• By hibernating

• By changing their fur color

What is your favorite mammal and why?

Explain how mammals are classified into different groups.

Describe the difference between marsupials and placentals.