Mammals are Vertebrates that have fur or hair, give birth to live young, and are warm blooded.
- The Platypus reproduces by laying eggs, along with the Echidna. Mammals that lay eggs are called Monotremes.
- Apes, monkeys, lemurs, and humans belong to a group of mammals called primates.
- Rats, mice, and squirrels are part of the Rodent group.
- House cats, cheetahs, lions, tigers, and cougars are part of the Feline family.