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My dog is losing hair, but it's not fleas or mange. What's causing it?

Updated on September 23rd, 2025

Pet's info: Dog | Chihuahua | Female | unspayed | 25 lbs

SADIE DOSENT HAVE MANGE OR FLEAS BUT SHE JUST STARTED LOSING THE REST OF HER HAIR..SHE DINT HAVE MUCH TO BEGIN WITH WHEN I GOT HER BUT NOW SHE'S LOSING THE REST. WHAT COULD CAUSE THIS?

1 Answer

Most Helpful Answer

Destini R. Holloway, DVM

Answered By Destini R. Holloway, DVM

Veterinarian

Published on December 7th, 2017

Please post a picture of your pets hair loss so that we can better help you with recommendations and possible causes for her hair loss.
Hair loss in general can be caused by: Flea allergies (always a possibility if your pet is not on a high quality flea flea preventative), thyroid disease, allergic dermatitis (environmental or food related), seasonal Alopecia (due to genetics), or even a bacterial or skin infection. Starting with a skin scrape and skin impression through your vet, along with a thyroid test (if your pet meets the criteria) is usually the best place to start when trying to find out the cause. We look forward to hearing back from you soon with pictures of your Sadie. Or a consultation can be requested for a more in depth and personal response. Best of luck and take care.
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