Q:

Why might a dog pass blood in his urine?

A:

Quick Answer

Blood in a dog’s urine, also called canine hematuria, can have a variety of causes, the most common being a problem with the urinary tract, such as bladder or kidney infections or bladder stones, according to dogzhealth.com. Yeast infections, Von Willebrand’s disease and medications are other common causes, as well as accidental consumption of certain rat poisons.

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Full Answer

Canine hematuria occurs due to bleeding in the urinary system, which can be caused by problems such as swelling and inflammation or infections, according to Davies Veterinary Specialists. Bleeding due to the kidney or uterus problems is classified as upper urinary tract bleeding, while bleeding from the bladder, urethra, prostate and vagina is classified as lower urinary tract bleeding. Blood in the urine is a serious issue, and it is essential to seek veterinary attention, says dogzhealth.com. Additional symptoms of canine hematuria can include frequent and/or painful urination and incontinence.

Urinary tract infections are caused by the invasion and colonization by bacteria in the bladder or the upper portion of the urethra, says petMD. Problems arise when the body’s immune system is impaired and unable to fight off the bacteria, leading to a urinary tract infection. This causes inflammation of the infected tissue and problems with urination. While dogs at any stage of life are susceptible to urinary tract infections and canine hematuira, vulnerability increases with advancing age.

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