Hypothesis 1 
Inflammation/immune-mediated

Immune-mediated:
	allergies- these may be caused by an immune mediated reaction causing the 
allergies and spreading to the joints.  Immune reaction now in joints, leading to 
degenerative changes

Infection:
	The dog has tarter.  Bacteria could have accumulated in the mouth, than spread 
through an injury in the oral cavity, to the blood, and finally settled out in the joints.  

Need to see radiographs to see if there is inflammation present.  Take a CBC to check the 
leukogram.