A mammal is an animal that gives birth to live young and suckles them on udders or breasts.
If you mean ARMADILLOS, yes, they are mammals.
If you mean DOLPHINS, yes, they are mammals
It means mammals that live on land.
If you mean "mammals", then no; Chickens have no mammary glands, and so they are not mammals.
If you mean mammals platypus are the only mammals that lay eggs!!
If you mean "Are all mammals primates?" then the answer is no. Primates are a type of mammal. All primates are mammals. Not all mammals are primates. For example, cats, dogs, bears, rodents... these are all mammals, but not primates.
If you mean GIRAFFE, they are mammals.
Do you mean: Are they mammals? Yes they are.
mammals
It is a habit of animals and birds
They mean the same thing it is just that mammals is the plural form of mammal.
Disease of dogs and other mammals.