Why is my cat peeing blood? Common causes and what to do

Blood in a cat's urine, known as haematuria, is always a cause for concern and requires veterinary attention. The most common causes include cystitis, bladder stones, urinary blockages, or feline idiopathic cystitis. Each condition has distinct symptoms and treatments, with some being life-threatening if left untreated. Always consult your vet immediately if you notice blood in your cat's litter tray.

Cystitis, or bladder inflammation, often results from bacterial infections. Treatment typically involves antibiotics to clear the infection. This is a relatively common and manageable condition in cats when addressed promptly.

Bladder stones develop when minerals crystallise in the urine, often due to insufficient water intake or high-mineral diets. These stones can irritate the bladder lining and urethra, causing bleeding. Treatment may involve dietary changes, increased hydration, or in severe cases, surgical removal.

Urinary blockages are emergencies. Initially, inflammation causes tissue shedding that may show as blood spots. Complete obstruction prevents urination entirely. Without treatment within 24-48 hours, toxins build up, leading to potentially fatal acute uraemia. Male cats are particularly susceptible due to their narrower urethras.

Feline idiopathic cystitis has no clear cause but may relate to stress, breed predisposition, or neutering status. Symptoms include frequent attempts to urinate with little output. If straining occurs, stones may be present, requiring imaging and possible surgery. Research suggests neutered cats have higher incidence rates.

1. Monitor litter box habits daily
2. Ensure constant access to fresh water
3. Use vet-approved urinary health diets
4. Reduce environmental stressors
5. Seek immediate veterinary care for any blood in urine

Blood in a cat's urine, known as haematuria, can indicate serious health issues. Common causes include urinary tract infections, bladder stones, kidney disease, or toxin exposure such as onion poisoning. If your cat shows frequent bloody urine, seek immediate veterinary attention as this requires prompt diagnosis and treatment.

Several conditions can lead to haematuria in cats. Urinary tract infections cause inflammation and bleeding. Bladder stones create irritation as they pass through the urinary system. Kidney disease may result in blood passing into the urine. Onion toxicity damages red blood cells, leading to haemolytic anaemia and bloody urine.

1. Urinary tract infections: Bacterial infections cause inflammation and discomfort
2. Bladder stones: Mineral formations that irritate the bladder lining
3. Kidney disease: Impaired filtration allows blood cells into urine
4. Toxin exposure: Onions contain compounds toxic to cats' red blood cells

Never ignore bloody urine in cats. The condition often causes significant pain and may indicate life-threatening problems. Your vet will perform urine tests, blood work, and possibly imaging to determine the underlying cause. Treatment depends on the diagnosis but may include antibiotics, dietary changes, or surgery for stone removal.

Preventative care includes providing fresh water, maintaining a clean litter tray, and avoiding toxic foods. Annual veterinary check-ups help detect early signs of urinary problems. For cats prone to urinary issues, special prescription diets may help maintain urinary health.