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Why does my dog have bumps on his back after playing outside?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | unneutered | 90 lbs

So i have a Boy pit he black and white but he a house dog but he does go outside for a few hours a day in the backyard One day he came back with this bumps on his back and i thought it was the shampoo i change that and still was there or it might be a allgeric recation I just wanna know what this could come from ?

1 Answer

Most Helpful Answer

Amber W

Answered By Amber W

Veterinarian, Certified Veterinary Acupuncturist

Published on August 15th, 2017

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! The lesions that you are seeing on JR's back could indeed be a reaction to a shampoo. However, it also looks to me that it could be a result of a bacterial infection, mite infection or even a flea allergy. The best thing to do would be to take JR to a veterinarian so that they can do a skin scrape and cytology to see what it going on. That way JR can be prescribed antibiotics or other medication if necessary.
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