Friday, September 20, 2013

Dog's body




Dog's body

   Nose
Nose is an important communication way for dog. Dog can awake to something by a sensitive nose. Comparing with a huma who has 5 million olfactory nerves, dog has 2-3 billoin olfactory nerves. Dogs smell a food before they eat it. Also, their nose is always wet. If nose is not wet, it probably will get sick.

   Ears
Ears are also well develped than human. They can hear a small sound that human cannot hear it.
 
   Eyes
Eyes are the weakest part of the body. They can only distinguish 2-3 colors. However, dynamic visual acuity is well develpoed, which is for seeing a moving object. So dog can hunt easily, even it is far from the sight.
 
   Tail
Tail is a great way to express emotion as human's face. Also, tail is important to make a body balance.
 
 
Temperature
_ Average temerature is 98.6℉ to 102.2℉. So, dogs are weak in summer.
 
 

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