Human beings , cows ,goats, horses ,tigers cats,rabbits,etc belongs to a group of vertebrates called mammals. Mammals have fur on their bodies.Mammals feed their young ones.
Definition: Any of a class (Mammalia) of warm-blooded higher vertebrates that nourish their young with milk secreted by mammary glands and have skin usually more or less covered with hair. Context: Some mammals, such as chimpanzees, dolphins, and human beings, are highly intelligent.