12 questions
Mammals are _______.
vertebrates
invertebrates
Mammals are _______.
cold-blooded animals
warm-blooded animals
Mammals have fur or hair on their bodies.
True
False
Mammals breathe with their lungs.
True
False
Dolphins and whales are considered mammals because ____.
they are fish
because they give birth to live young
they swim
Birds and mammals are both warm blooded, but they are different in that _____________.
Mammals lay hard shelled eggs and birds don't
Birds lay hard shelled eggs and mammals don't