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Cat is one of mankind's closest friends. Since cats have been domesticated by humans, they tend to be more and more, gradually become family pets around the world. They are also friends humans sustenance human emotions. Cats lovely appearance flexible body. Generally speaking, domestic ( Felis catus ) characteristics being docile, lively, irritable but clingy; while wild silvestris always vigilant in order survive. This review analyzes origin, evolution domestication cats, studies physiological including their body circulatory system sensory characteristics, further understand cats.