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A mammal is a vertebrate animal of the class Mammalia. Mammals are characterized by the presence of milk-producing mammary glands for feeding their young, a neocortex region of the brain, fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors diverged in the Carboniferous Period over 300 million years ago. Around ...
Mammal. Mammals are the class of vertebrate animals characterized by the presence of hair (or fur) and mammary glands, which in females produce milk for the nourishment of young. The other extant (living) classes of vertebrates (animals with backbones) include fish (with a few recognized classes), amphibians, reptiles, and birds .
Taxonomia de Wilson e Reeder. O compêndio, publicado por Wilson e Reeder, de espécies de mamíferos viventes e recém extintos, é hoje considerado oficial por várias entidades (como a Sociedade Americana de Mastozoologistas) e utilizado como base em diversas publicações científicas. Três edições já foram publicadas (1982, 1993, 2005 ...
Mammal. Mammals are craiturs that gies milk tae thair affspring. A mammal haes wairm bluid an a rig-bane. Cats, mice an sicna mammals bides on laund an selchs an whauls an sicna mammals bide in the sea . Awmaist aw mammals gie birth tae leevin young. Thare are anerly twa mammals that lay eggs, cried Monotremes, the Deuk-nebbed Platypus ...
Land mammal Marine mammal Wildlife mammal/animal Domestic mammal Alabama: American black bear (2006) Racking horse (state horse) (1975) Alaska: Moose (1998) Bowhead whale (1983) Arizona: Ring-tailed cat (1986) Arkansas: White-tailed deer (1993) California: California grizzly bear (1953) Gray whale (1975) Colorado: Rocky Mountain bighorn sheep ...
The largest living procyonid is the raccoon ( Procyon lotor) of North America, having a body length of 40 to 70 cm (16 to 28 in) and a body weight of 3.5 to 9 kg (8 to 20 lb). The extinct Chapalmalania of South America was the largest known member of this family, about 1.5 metres (4.9 ft) in body length.
Marine mammals are mammals that rely on marine (saltwater) ecosystems for their existence. They include animals such as cetaceans ( whales, dolphins and porpoises ), pinnipeds ( seals, sea lions and walruses ), sirenians ( manatees and dugongs ), sea otters and polar bears. They are an informal group, unified only by their reliance on marine ...
