Cat's and sense of Smell

The feline sense of smell is about times more developed than that humans, and is essential to cats relation to their sex life and hunti for food and water. A thick spon membrane (olfactory mucosa) in 1 nose, with over twice the surface ai of that of humans, contains 2 million scent-sensitive cells. Wh minute particles of odorc substances in the atmosphere drawn in during normal breathii they stimulate highly sensitive nei endings of fine hairs within the no cavities. In the roof of the mouth there is special organ lined with recept cells. Known as the Jacobson's orgy it is a tube, 1.2 cm (1/2 in) long, its opening just behind the front teeth. Interesting odours are sucked into the mouth and directed to the Jacobson's organ to be investigated in more detail. The facial expression cats execute to do this (open mouth, lips drawn back and wrinkled nose) is called the Flehmen reaction.
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