Mammals feed their young with milk while classes of animals don't
Mammals feed their young with milk while classes of animals don't
Mammals are the only vertebrate group which feed their young on mothers' milk.
(1) Only mammals nurse their babies on the mother's milk. (2) Only mammals have hair. (3) Mammals are warm-blooded. Birds are warm-blooded, too, but nearly all other animals are coldblooded. (4) Mammals have a larger, more well-developed brain than other animals. (5) Most mammals give their young offspring more protection and training than other animals.
The presence of a backbone (a "vertebrae") does not DEFINE a mammal because other animals also have backbones, eg reptiles, birds and fish - these animals are also "vertebrates".Mammals are mammals because they are the only animals to have fur/hair and feed their young on milk.
Yes. Mammals are the only animals that feeds milk to their young.
Mammals are the only animals that breastfeed their young.
mammals
The most obvious way in which mammals differ from the other four classes of vertebrates is that mammals nurture their young on mothers' milk.
Mammals are those animals that nurse their young on milk. All species of mammals do that; no other kind of animal does.
Yes, horses have nipples. They are similar to other mammals in that they are used to nurse their young. However, unlike some other mammals, horses have only two nipples, located on the mare's underside.
The mammals and the birds
Humans are mammals, yes. Mammals are animals that have fur or hair, give birth to live young, and the females produce milk from mammary glands to feed their young.