mammals
Mammals are the only vertebrate group which feed their young on mothers' milk.
No, dolphins are mammals.
Mammals feed their young with milk while classes of animals don't
Monotremes are the only mammals that give birth to their young in eggs
Platypuses are mammals (although unusual egg-laying mammals) and, like all mammals, they feed their young on mothers' milk. The platypus does not suckle its young quite like other mammals do. It does not have nipples, but it exudes milk from specialised sweat glands on its abdomen.
Mammals feed their young with milk while classes of animals don't
Because they nurse their young, as all mammals do. They share other characteristics most mammals have: they are warm-blooded, vertebrates, have hair or fur, give birth to live young, and feed their young milk.
As with all mammals, the echidna feeds its young on mothers' milk.
Like all mammals, platypus young feed on mothers' milk. The platypus and echidna are both egg-laying mammals, but they are still classified as mammals because the young suckle from the mother.
It lays its young in eggs.
By nursing their young ones by milk and by internal development .
Bats fly, which makes them seem similar to birds. However, they have all the characteristics of mammals. They are covered in fur, they are warm blooded, they give birth to live young, and they produce milk to feed their young.