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Why is my dog biting her tail and back? Fleas, mites, or allergies?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | unspayed | 1 year and 9 months old | 30 lbs

Why is dog biting back tail

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on April 19th, 2017

Poor Lola! She could be biting her back and tail because of fleas, mites, ringworm, or allergies. If she isn't up to date on her flea treatment, she will need a spot on treatment such as Advantage or Revolution. You will need to disinfect the environment as well. If she is up to date on her flea treatment, I recommend taking her into the vet for an exam tomorrow. The vet can do blood tests, skin scrapings, and use a Wood's lamp to diagnose allergies, mites, and ringworm. Once the cause of the biting is found, the vet can prescribe the appropriate treatment.

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