Mammals have a body covering of hair or fur.
Mammals
Mammals, though not all mammals are hairy or furry eg Whales, Elephants etc.
Epithelial
The mammary glands, a defining characteristic of mammals.
Birds and mammals are air breathers. Lampreys are not.
It is rephrased as mammals are homeothermic animals .
precision grip
a Shared ancestral characteristic a shared primitive characteristic
Dolphins are warm blooded like other mammals.
Having hair is a characteristic of all "mammals."
As with all mammals, the echidna feeds its young on mothers' milk.
Mammal.All mammals feed their young on mothers' milk. This is the defining characteristic of a mammal, and it is a characteristic not shared with any other vertebrate.Mammals include placental mammals, marsupials and monotremes (egg-laying mammals).