AP BIOLOGY

Detailed explanation-1: -Mammals are distinguished from other vertebrate animals by several unique features. All mammals produce and secrete milk from mammary glands to feed their offspring. They also have hair on their bodies, although some mammalian groups have less hair than others.

Detailed explanation-2: -Answer: All mammals have fur or hair, give birth to live young, have lungs and need air to breathe, are warm blooded, have four limbs if they live on land, and feed their babies milk from their breasts.

Detailed explanation-3: -Mammals are vertebrate animals that are endothermic, have hair on their bodies, and produce milk to feed their babies. Many mammals give birth to live young that are small and helpless.

Detailed explanation-4: -1. What five characteristics do mammals have in common? Mammals have hair or fur; are warm-blooded; most are born alive; the young are fed milk produced by the mother’s mammary glands; and they have a more complex brain than other animals.

Detailed explanation-5: -All mammals are capable of producing milk, from the egg-laying monotremes like platypuses, to pouch-sporting marsupials like kangaroos and wallabies, and the more reproductively familiar rabbits, tigers, hippos, monkeys, and dolphins.