any vertebrate of the class Mammalia, having the body more or less covered with hair, nourishing the young with milk from the mammary glands, and, with the exception of the egg-laying monotremes, giving birth to live young.

noun

beast , creature , vertebrate , bovine , carnivore , cat , coati , edentate , equine , feline , marsupial , ovine , primate , rodent , ruminant , swine , ungulant