As with any digestion system, it is to digest food into energy and to expel waste.
Bull Terriers were first used for dog fighting and bull baiting, and today their main function is companionship.
w00f
It's function is to store and release urine
Sheltie dogs were originally bred to be used as herding dogs in Scotland. They are partially descended from dogs used in the Shetland Isles for herding.
It' is a happy and healthy dog
No that would be wierd why would a dog be an organ system!
What is a Capitalist system
the main one is to sit
the main habit of a dog is to bark
I must ask how would a dog's saliva get in your system
An enlarged heart in a dog can be caused by a number of problems - congenital malformations of the internal heart structures, primary cardiovascular disease such as endocarditis, or secondary cardiovascular disease resulting from primary renal or pulmonary disease. Without more specific information, the underlying cause cannot be determined with any accuracy.