Can you guess the No. 1 medical conditions in dogs and cats?

Quick note: These results are based on more than 1.3 million pet insurance claims submitted to Nationwide last year for more than 550,000 pets. Without further ado, here are the top 10 medical conditions affecting dogs and cats and their associated costs based on Nationwide claims data.

Top medical conditions in dogs

1. Allergic dermatitis

Average cost: $210

2. Otitis externa

Average cost: $153 per dog

3. Benign skin neoplasia

Average cost: $348 per dog

4. Pyoderma and/or hot spot

Average cost: $122 per dog

5. Osteoarthritis

Average cost: $299 per dog

6. Periodontitis/dental disease

Average cost: $312 per dog

7. Gastropathy

Average cost: $279 per dog

8. Enteropathy

Average cost: $139 per dog

9. Cystitis or urinary tract infection

Average cost: $284 per dog

10. Soft tissue trauma

Average cost: $229 per dog

See the top cat results on the next page.

Top medical conditions in cats

1. Feline cystitis, or FLUTD

Average cost: $441 per cat

2. Periodontitis/Dental disease

Average cost: $326 per cat

3. Chronic renal disease

Average cost: $628 per cat

4. Gastropathy

Average cost: $313 per cat

5. Hyperthyroidism

Average cost: $396 per cat

6. Enteropathy

Average cost: $189 per cat

7. Diabetes mellitus

Average cost: $862 per cat

8. Upper respiratory infection

Average cost: $185 per cat

9. Allergic dermatitis

Average cost: $158 per cat

10. Inflammatory bowel disease

`Average cost: $311 per cat