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Why is my dog lethargic with a swollen testicle and not playing?

Updated On September 23rd, 2025

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

I have a dog 1 year and 3 months he been sad for a couple of days now one of his balls is swollen All he does is sleep and when before he would play around

1 Answer

Most Helpful Answer

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Answered By Lauren Kennedy, DVM

Veterinarian

Published on August 3rd, 2018

I would recommend taking Rocky in to be examined by your vet as soon as possible. I am concerned that he has either an infection in his testicles or prostate or that something more serious, like cancer, may be going on. Best of luck. Thanks for using Petco Pet Education Center, formerly Petcoach.

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