The nose is very important for a dog. “A dog’s nose is as important as our eyes are to us,” says Dr. Brian Janke a veterinarian in Rolla, Missouri. Although a dog brain is very small compared to that of the human brain, the regions of the brain responsible for smell interpretation and perception, called the olfactory bulbs, are four times larger in dogs than in humans. The dog’s nose is also an extremely developed receptor organ. It is usually wet on the outside and the dog keeps the nose moisturized by licking it frequently. This allows molecules to stick on the nose that can help it smell more effectively.The dog sniffs, draws air up through the turbinate bones and to the back of the nose. An olfactory bulb at the end of each nasal passage then sends information about the scent to the dog’s brain.
Reference:
-Barbara Baird(August 2002). A dog's nose. Outside In, volume number 3, Retrieved from http://mdc.mo.gov/kids/out-in/2002/03/3.htm
- Image Retrieved from http://www1.dogbreedinfo.com/images14/GalleryDogNose2.JPG
they are also very helpful to policemen!
ReplyDeleteInteresting blog . It has many weird but profitable facts.
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ReplyDeleteNice blog..there are lots of useful and new information even for biology majors ( who should know these facts)...By the way. does any other animal have this strong sense of smell?
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