Increased Water Consumption in Cats

Several illnesses in cats begin with increased thirst and, as a result, increased urination. The only normal times a cat becomes thirsty is when the weather is hot or if they are elderly. Although it is normal for elderly cats to consume more water than they did when they were younger, they should not be draining their water bowls continually.

  1. Illnesses

    • Illnesses that cause a marked increase in a cat's water consumption include diabetes, Cushing's disease, hyperthyroidism (also called overactive thyroid), cancer (especially cancer of the white blood cells), chronic kidney disease and dementia. According to Mar Vista Animal Medical Center, excessive thirst can also be the side effect of a seizure disorder.

    Other Symptoms

    • Be on the lookout for other symptoms along with increased thirst and increased urination. A vet will need to know these in order to help diagnose what is wrong with the cat. Other symptoms to watch out for include increase of appetite, weight loss, fainting spells, strange twitching, problems urinating, the development of a pot belly and sudden thinning or balding of the coat.

    Time Frame

    • All of the illnesses that include excessive thirst get worse over time and can lead to the death of the cat. Getting the cat to the vet as quickly as possible is particularly important in diabetes, since the cat is susceptible to falling into a diabetic coma. Cats with increased thirst but problems urinating may have a blockage of the urethra. Generally, a cat can only live 48 to 72 hours if his urethra is blocked.

    Diagnosis

    • Diagnosis includes a hands-on inspection of the cat, a close examination of the eyes and a blood test. A urinalysis may be taken, especially in cases of suspected kidney problems. X-rays, ultrasounds or other scans may be done if a tumor is suspected.

    Amount

    • According to knowyourcat.com, the average healthy adult cat needs between 60 to 80 milliliters (2 to 3 ounces) of water for every kilogram it weighs. Cats can receive some of this fluid intake need from canned or pouch cat food.