It means mammals that live on land.
If you mean ARMADILLOS, yes, they are mammals.
If you mean DOLPHINS, yes, they are 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.
Do you mean: Are they mammals? Yes they are.
mammals
If you mean GIRAFFE, 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.
If you mean a 'turtle' - they are reptiles - not mammals !
I assume you mean "mammals"? In that case, no. Mammals are simply any animal with hair or fur. Humans, cats, dogs, bears...all are mammals. If you really do mean "mammles" I'm sorry because I have never heard of that.