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Why is my kitten drinking so much water after a recent vet visit?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Mediumhair | Male | unneutered | 3 months and 14 days old

Over the last 24hrs my 16 week kitten has suddenly been drinking much more water than usual. Yesterday he had a big day - vet trip for 3rd vaccination, de-flea and wormed with a topical med, and also hurt his leg so had to be taken back for a 2nd vet visit in one day. Big day for him. Not sure if these could be related to his sudden constant thirst.

1 Answer

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Answered By Lauren Jones VMD

Veterinarian

Published on March 8th, 2022

That certainly does sound like a big day for JJ! Vaccines, deworming and flea medication, and leg injuries don't cause sudden increases in water intake. Now, if JJ was kept at your vet in a cage without water for several hours for a drop off appointment, then it would be reasonable to expect him to drink a lot of water at home. If he wasn't dropped off away from water, I'd be more inclined to suspect another issue, such as a urinary tract infection. Diabetes and kidney disease can also cause pronounced increases in water consumption, but they would be highly unusual in a kitten as young as JJ. If JJ continues to drink excessive amounts of water tomorrow, then I would certainly take him back to the vet for evaluation. Your vet will likely want to at a minimum check a urine sample for evidence of infection. I hope that everything goes well!

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