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Why is my house-trained dog suddenly peeing inside the house?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | unspayed | 40 lbs

Hi. Riley has never pissed in the house before. Ever. Now, her friend is in a cage almost all day or when he is out she is not because he just got neutered and he can't be playing. Anyways. She has pissed in the house 3 times now even after we've taken her outside to pee. She's pissed on the living room floor, the kitchen, bed bed and floor even me (because I was laying in the bed doing homework)

4 Answers

Most Helpful Answer

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Answered By Lauren Jones VMD

Veterinarian

Published on March 27th, 2017

Poor Riley (and you!)! Riley could be urinating in the house because of a medical issue, such as a urinary tract infection, crystals in the urine or bladder stones. Behavioral stressors, such as a change in her normal routine, can trigger inappropriate urination in some pets. As a first step, Riley should be seen by her vet and have a urinalysis performed to check for the presence of infection and crystals. A urinary tract infection requires antibiotics and crystals may require a diet change. If medical issues are ruled out, consider using a calming pheromone diffuser or collar (Adaptil is one example).

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Other Answers

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on December 8th, 2018

    That's not good! There could be a couple of reasons why Ki has peed in the house. It could be she really had to go and couldn't hold it anymore. It could be a medical cause such as a UTI, bladder stones, kidney disease, or spay incontinence. Keep an eye on her, and as long as she is otherwise acting normal, take her into a vet on Monday. Should her urine be bloody, she becomes lethargic, stops eating, starts vomiting, vomits water, stops drinking water, and/or has trouble passing urine, take her into a vet right away. Best of luck.

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    Answered By Shaneez Wallani, DVM

    Veterinarian

    Published on January 24th, 2019

    You are correct to be concerned. I doubt that Panda is being bratty or spiteful, as dogs' understanding of rules and behaviour is different from ours. When a dog who is house trained starts to urinate inside, there is often a medical cause. Panda's symptoms could be due to a urinary tract infection, crystals in the urine, stones in the urinary tract, a mass, or toxin ingestion. It is important that you have Panda seen by a veterinarian to help determine the cause of the signs and to start treatment. If you notice her straining to urinate/unable to produce urine, this is a medical emergency and can be life threatening. She may be avoiding going outside due to pain/discomfort associated with urinating, or she may be unable to get out in time.

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    Answered By Maria DVM

    Veterinarian

    Published on May 21st, 2018

    There could be a few different things going on with Baker. He may have a urinary tract infection which requires antibiotics. Your vet can determine this with a urinalysis It could be a kidney issue which can be ruled out by blood work. He may be marking due to hormones. The only way to resolve this is by neutering and hoping that this behavior does not last. Before saying it is truly behavioral I would recommend ruling out a medical cause. Thank you for using Petco Pet Education Center, formerly Petcoach.

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