- 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.
Origin of mammal
Examples from the Web for mammals
In his scheme, the limbic system evolved alongside the developing social complexity of the mammals.Why Do We Cry?
January 10, 2013
But which mammals are their closest relatives, and when did whales enter the seas?How Long Is a Year? Is the Earth Slowing Down? And Other Questions About Time
January 6, 2013
And this is true of virtually all companies, just as it was true of dinosaurs and mammals.Can Walmart Change?
November 29, 2012
Sure, these two mammals live on different poles and would never actually meet.Coca –Cola, M&M’s, & More Classic Holiday Commercials (VIDEO)
December 22, 2011
“Experiments with mammals have shown that it is that uncertainty that is so traumatic,” said Gillibrand.Chilean Miners Fight Their Demons
October 10, 2011
This is the case with most birds and mammals and many races of man.The Sexual Question
Only the birds and mammals have warm blood, and of these the birds are distinctly the warmer.
In the case of mammals the covering is fur, in the case of birds feathers.
His tusks are his incisors, and they have developed as have almost no other teeth in the mammals.
The leader of the mammals turned and faced the earth people.
- any animal of the Mammalia, a large class of warm-blooded vertebrates having mammary glands in the female, a thoracic diaphragm, and a four-chambered heart. The class includes the whales, carnivores, rodents, bats, primates, etc
Word Origin and History for mammals
1826, anglicized form of Modern Latin Mammalia (1773), coined 1758 by Linnaeus for the class of mammals, from neuter plural of Late Latin mammalis "of the breast," from Latin mamma "breast," perhaps cognate with mamma.
- Any of various warm-blooded vertebrate animals of the class Mammalia, whose young feed on milk that is produced by the mother's mammary glands. Unlike other vertebrates, mammals have a diaphragm that separates the heart and lungs from the other internal organs, red blood cells that lack a nucleus, and usually hair or fur. All mammals but the monotremes bear live young. Mammals include rodents, cats, dogs, ungulates, cetaceans, and apes.