Petco Text Logo
Petco Pet Logo

My old dog marks inside. Can I teach him to stop marking behavior?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | unneutered | 9 years and 1 month old | 18 lbs

What can I do to stop territorial marking indoor? I cannot trust my dog to be left alone in the house for even 5 minutes before coming back to him having relieved himself against many objects. Is he too old to teach differently? Are dog diapers a good option?

1 Answer

Most Helpful Answer

Image profile

Answered By Stacey Anstaett, DVM

Veterinarian

Published on August 16th, 2019

Has he always done this? If this is new behavior, it may be that he has a medical condition that is causing him to urinate more frequently resulting in more marking. A urinary tract infection, bladder tumor or bladder stones, kidney disease, endocrine diseases such as diabetes, or prostate disease since he is intact--any of these could cause him to urinate more. Take him to your vet to rule out a medical cause. It may help to have him neutered, as he's less likely to feel the "need" to mark his territory if he is neutered. Try some potty training steps as suggested in the article below. Dog diapers are not ideal in my opinion. The skin can become very irritated if they are not changed very shortly after they become wet, and regular bathing is needed. https://www.spca.org/file/pet-university/Urine-Marking---Dogs.pdf https://www.petcoach.co/article/top-5-tips-to-potty-train-your-dog-young-and-old/ I hope that is helpful for you, thanks for asking PetCoach!

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored