Excessive Urination in Dogs

The causes and treatments of a dog’s excessive urinating.

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Endocrine disorders: Hyperadrenocorticism (Cushing’s disease), hyperthyroidism, diabetes mellitus, diabetes insipidus, pyometra, or secondary hyperparathyroidism.

Non-infectious/Acquired diseases: Kidney disease or liver disease.

Infectious diseases: Leptospirosis, cystitis (inflammation/infection of the bladder, usually causing frequent urination), or pyelonephritis (kidney infection, usually bacterial).

Toxicity: Ethylene glycol (antifreeze), chocolate, cholecalciferol (rodenticide), organophosphates (frequent urination), calcipotriene (human psoriasis medication), vitamin D, aminoglycoside antibiotics, or amphotericin B (antibiotic).

Congenital/Inherited disorders: Primary parathyroid hyperplasia (in German Shepherd Dogs), portosystemic shunt, renal dysplasia/hypoplasia (abnormal kidney development; in Miniature Schnauzers, Alaskan Malamutes, Cocker Spaniels, Doberman Pinschers, Lhasa Apsos, and many other breeds), chronic hepatitis (Doberman Pinschers), or hepatic amyloidosis (Shar-Pei).

Drug reactions: Glucocorticoids or phenobarbital.

Tumors: In pituitary, liver, adrenal glands, anal sacs (when accompanied by paraneoplastic syndrome), or malignant lymphoma.

Miscellaneous disorders: Paraneoplastic syndrome (if accompanied by hypercalcemia) or polycythemia (abnormal increase in red blood cells, either primary or secondary to another disease).

What to do: Increased urination may or may not be an emergency, depending on the cause, duration, and presence of other symptoms. Contact your veterinarian or emergency clinic immediately for specific advice about your dog’s situation.

Disclaimer: DogChannel.com’s Dog Medical Conditions are intended for educational purposes only. They are not meant to replace the expertise and experience of a professional veterinarian. Do not use the information presented here to make decisions about your dog’s ailment. If you notice changes in your dog’s health or behavior, please take your pet to the nearest veterinarian or an emergency pet clinic as soon as possible.

Have a health question about your dog? Ask our 
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yvonne   corryton, Tennessee

5/20/2013 6:03:11 AM

my female just had large litter & now is peeing in house large amounts . any opinions?

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fran   dunnellon, Florida

3/25/2013 10:40:25 AM

I have a 10 yr old female mini dachshund who drinks a lot and urinates often. She goes out pees and comes in and pees in her crate. I a at my wits end...Any ideas?

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edwardr   Wis Rapids, WI

12/16/2012 10:40:15 AM

My dog Raggedy Ann was peeing excessive I took her in to my vet and she was diagnosed with cushings disease. She is now on lysodren and her excessive peeing and water drinking has slowed way down.

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Martha   jersey city, NJ

3/5/2012 8:54:50 PM

my dog is 13 yrs old and the day its been kinda peeing on its self and she an old dog and i never seen her do that no ive put a daper to help if any 1 has an advice please help me

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