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Why is my puppy biting himself raw and bleeding? Is it mange?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | unneutered | 46 lbs

My puppy as been biting at himself for about 2 - 3 weeks now. We thought it was fleas but we showered him and gave him treatment plus our house is very clean. But he still bites at himself where it has become raw to the point it started to pus but now it bleeds. He gets very scared if anyone tries to touch by the spot he’s been biting at. I need help because he’s starting to bite in other places now and I don’t know what to do.

1 Answer

Most Helpful Answer

Kevin Sanada, DVM

Answered By Kevin Sanada, DVM

Veterinarian

Published on January 21st, 2018

I would be suspicious of mange causing this. Mange is caused by a microscopic mite that burrows under the skin and causes intense itching. In order to get this diagnosed and properly treated, you will have to take Zion to a vet. Considering the skin also appears to be infected (secondary infections are common with long-standing infestations) and very sore, it's best to take Zion to the vet as soon as possible for treatment.

One thing you can do for itchy skin, is give a bath with cool water using an oatmeal or aloe shampoo. You can get these shampoos at the pet store.

I hope that helps and Zion gets better soon.
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