Mammal (Eng: Mammalia) classified in the phylum chordate Mammalia by word comes from the word Mamma which means "chest", a group of mammal. The evolution and development of the body that respects diversity. Including a neurological progress. Able to live in any environment [1] with body size and morphology, different away. Including the work of the various systems within the body that are adapted to the characteristics of the species. A distinguishing feature is available only in the mammary glands of female only. To produce milk to feed the baby from birth [2] is a mammal hairs fibrous (hair) or fur (fur) covering the entire body. To maintain body temperature Hairless except for aquatic mammal. No animal is classified as a large group. There is a population of about 4500 species, which is very small compared to the birds, there are about 9,200 species of fish and about 20 000 species, including insects, about 800,000 species of land animals such as dogs, elephants, monkeys, tigers, lions, kangaroos, porcupines, mice, etc. For animals that are classified as mammals, including dolphins, whales milk a minute and dugongs. But for poultry feeding with milk is the only type bat. The flying squirrel and the Not in the category of poultry. Because the wings to glide just one term only. Mammal is mainly Farrow. The only exception platypus and E. think the eggs.
การแปล กรุณารอสักครู่..
