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The Curious Bag
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There are many reasons why your cat may be drinking more water than normal.You must consult your veterinarian if you notice your cat has suddenly started experiencing excessive thirst, as this could be a symptom of a serious disease.
Polydipsia and Polyuria
According to Pet Place, "The term polydipsia refers to excessive thirst manifested by excessive water intake, which in turn usually leads to polyuria, which is the formation and excretion of a large volume of urine."
Chronic Renal Failure
Chronic renal failure is a kidney disease that is common in older cats. An increase in drinking and urinating is due to the kidney's inability to concentrate the urine.
Diabetes Mellitus
Diabetes mellitus is an insulin deficiencey in cats. Excessive urination, excessive thirst and weight loss are common symptoms of diabetes.
Fatty Liver Disease
Fatty liver disease, also known as hepatic lipidosis, is caused by a sudden accumulation of fat cells inside the liver that the body fails to utilize. Symptoms of fatty liver disease include weight loss, excessive thirst, and vomiting. A biopsy will need to be done by your veterinarian to determine a diagnosis.
Hyperthyroidism
Hyperthyroidism is an overactive thyroid gland and is common in older cats. Increased appetite and vomiting are symptoms of hyperthyroidism.
Source:
The American Society for the Prevention of Cruelty to Animals
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