Dogs

1. Ear infection
2. Skin allergies
3. Skin infection
4. Non-cancerous skin growth
5. Upset stomach
6. Intestinal upset/diarrhea
7. Arthritis
8. Bladder infection
9. Bruise or contusion
10. Underactive thyroid

Cats

1. Bladder infection
2. Chronic kidney disease
3. Overactive thyroid
4. Upset stomach
5. Periodontitis/dental disease
6. Diabetes
7. Intestinal upset/diarrhea
8. Ear infection
9. Skin Allergies
10. Lymphosarcoma

In 2011, VPI received more than 62,000 canine claims for ear infections, the most common cause for taking a dog to see a veterinarian. The average claim fee was $98 per office visit. For cats, a bladder infection was the most common reason to take your kitty to the veterinarian. VPI received more than 3,800 medical claims for this ailment—with an average claim amount of $233 per office visit. The most expensive canine condition on the list (non-cancerous skin growth) cost an average of $220 per visit, while, for cats, the most expensive condition (lymphosarcoma) cost an average of $426 per visit.