The following breeds are more likely to develop atrioventricular valvular insufficiency (AVVI):5
- Boston Terrier
- Cavalier King Charles Spaniel
- Chihuahua
- Fox Terrier
- Miniature Pinscher
- Miniature and Toy Poodles
- Miniature Schnauzer
- Pekingese
- Pomeranian
- Whippet
The following breeds are more likely to develop dilated cardiomyopathy (DCM):5
- Afghan Hound
- American Cocker Spaniel
- Boxer
- Dalmatian
- Doberman Pinscher
- English Bulldog
- English Cocker Spaniel
- Great Dane
- Irish Wolfhound
- Newfoundland
- Saint Bernard
- Scottish Deerhound