What Causes Dogs to Lose Hair & Fur?

Mites, ringworm fungus & bacterial infections can cause bald patches, irritation & hair loss in dogs. Vet treatment is required.  

Skin Infections

Food or environmental allergies in dogs commonly cause hair loss, skin irritation, redness, itching & secondary infections.


Overactive adrenal glands (Cushing's) or underactive thyroids (hypothyroidism) affect hair growth cycles in dogs.

Endocrine Diseases 

Stress in dogs increases cortisol leading to alopecia & fur loss. Calming training, routine & supplements help.

Stress & Anxiety

Dogs naturally lose more fur during seasonal shedding periods in spring & fall which is normal. Excessive shedding needs vet exam.

Shedding Seasons

Some dogs like Poodles have breeding making them prone to pattern baldness or follicular dysplasia despite good health.

Breed-Related Fur Loss 

Lack of nutrients like proteins, fatty acids, zinc or vitamins can cause dry, brittle and thinning fur in dogs.   

Nutritional Deficiencies  

Should Adult Dogs Be Fed Puppy Food?