Re: How can animals eat old meat and drink dirty water and not get sick ?

Dogs differ from humans when it comes to the digestive system. No digestion 
takes place in the dog's mouth as opposed to humans. His starts in the 
stomach. 

   The digestive system consists of the mouth, which is used only as a 
passage way, if you will, the esophagus, the stomach, small intestine, 
large intestine and the rectum. 

   The dog is blessed with strong juices in his stomach to help break down 
food and bone for easy digestion and to prevent indigestion. 

There are many other aspects to a dog's anatomy that are clearly more 
comprehensive and detailed than what is described here. Knowing the dogs 
general anatomy is very helpful and will be of great use should the time 
come that you need it.

Refference:  http://ia.essortment.com/doganatomy_rkav.htm 
Title: Anatomy of a dog
Description: The dog is made up of various parts that make him whole. Learn 
man's best friend's anatomy by reading this article. 

                                                                                                   
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