Why is my dog's testicle swollen with green discharge and licking?
Updated On September 23rd, 2025
Pet's info: Dog | Labrador Retriever | Male | unneutered | 9 years and 10 months old | 65 lbs
My 9yo labrador has one significantly enlarged testicle & is constantly & relentlessly licking his genital area. I've noticed a green-yellow discharge leaking from his penis, more frequently than what seems to be normal. I took him to the local vet a few weeks ago for hind leg issues where they pointed out the enlarged testicle to me but it wasn't mentioned again. Can this be serious? Should I take him to a different vet? Thank you so much. I wanted to ask you before stressing him with the vet.
2 Answers
Most Helpful Answer
Published on May 29th, 2019
Thanks for using Petco Pet Education Center, formerly Petcoach. Yes I would definitely bring this up again. A few things come to mind - some more serious than others. Testicular torsion is excruciatingly painful and requires surgery. Testicular cancer, and scrotal hernia are also on my list of things to rule out. The green/yellow discharge can actually be normal in in-tact male dogs but could also signal an infection or urinary problem. All in all, it's worth talking to your vet about it again. Best wishes to you and Buddy!
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on April 25th, 2018
Both of the problems you've noted can be normal. The dark skin is normally seen on the testicles, but if it seemed to happen suddenly, then this can indicate that there has been irritation of the scrotum. The scrotum often gets irritated from rubing against things, and with infections - I do not see evidence of infection here. I wouldn't be worried about it unless you start to notice defects in the skin, or any redness and oozing. The greenish discharge is a normal funding from a dog's prepuce. This is a substance they secrete called smegma and is seen occasionally. Infections can also cause discolored discharge, but it would be oozing a lot, causing irritation and swelling. If you are not noticing any other problems, then I would not worry about it. If you happen to notice any signs of a problem, then it's best to have a vet evaluate him, because infections in these areas often require prescription treatment. I hope that helps and all is well with Kobe.
1Pet Parents found this answer helpful
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