8 Most Unhealthy Dog Breeds

English Bulldog: Bulldogs are prone to respiratory issues due to their brachycephalic (short-nosed) skull shape, which can lead to breathing difficulties, especially in hot or humid weather.

Pug: Similar to Bulldogs, Pugs have brachycephalic features that predispose them to respiratory problems. 

French Bulldog: Another brachycephalic breed, French Bulldogs often experience respiratory issues, particularly when exercising or in warm weather.

Basset Hound: Basset Hounds are prone to obesity, which can strain their long backs and lead to musculoskeletal issues. They also commonly suffer from ear infections due to their long, floppy ears.

Dachshund: Dachshunds have a predisposition to intervertebral disc disease (IVDD) due to their long spinal structure. This can result in back problems and paralysis if not managed properly.

Great Dane: Despite their large size, Great Danes are prone to certain health issues such as bloat (gastric dilatation-volvulus), a life-threatening condition where the stomach twists and traps gas.

Cavalier King Charles Spaniel: Cavaliers are prone to a heart condition called mitral valve disease, which can lead to heart failure if left untreated.

Shar Pei: Shar Peis are known for their distinctive wrinkled skin, which can predispose them to skin infections and dermatitis. They also have a higher risk of developing a hereditary condition called Shar Pei fever.