Urgent

    Excessive Thirst in Pets

    Normal water intake is up to 50–60 ml/kg/day. Regular excess needs blood and urine testing.

    АП

    Medically reviewed by

    Анна Петрова, DVM, к.в.н.

    Lead Veterinary Editor

    Last reviewed:

    If thirst rises over days with weight loss — urgent vet visit.

    Assess

    Excessive Thirst in Pets

    Normal water intake is up to 50–60 ml/kg/day. Regular excess needs blood and urine testing.

    • Chronic kidney disease
    • Diabetes mellitus
    • Cushing's syndrome in dogs
    • Pyometra in intact bitches (life-threatening)

    Possible causes

    • Chronic kidney disease
    • Diabetes mellitus
    • Cushing's syndrome in dogs
    • Pyometra in intact bitches (life-threatening)
    • Liver disease
    • Heat or exercise (normal)

    What to do at home

    1. Measure ml of water drunk per day
    2. Do not restrict water — masks the sign and is dangerous
    3. Collect morning urine for testing
    4. Log urination frequency

    When to call the vet

    • Thirst > 100 ml/kg/day
    • With weight loss, vomiting, lethargy
    • Bitch after heat — heavy drinking (rule out pyometra)
    • Senior pet with sudden habit change

    FAQ

    What tests are needed?

    CBC and chemistry, urinalysis with specific gravity, glucose. Ultrasound of the uterus in intact females.