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Why is my dog losing fur? What are the possible causes of hair loss?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Female | 1 year and 1 month old | 88.1 lbs

what causes fur loss on a dog

1 Answer

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Answered By Claudia Fioravanti

Veterinarian

Published on March 13th, 2020

Hi, there are a number of different causes for hair loss in dogs. First of all dogs shed hair normally as part fo the normal hair cycle. However, if you notice areas on your dog’s fur where fur is missing, then it could be secondary to a skin condition. There are 2 categories of skin diseases, those that cause itchiness and those that don’t cause itchiness. In the first one, dogs can have skin parasites such as fleas or mites, in the second one the hair loss can be secondary to a metabolic condition such hypothyroidism for example.

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