Why Is My Dog Not Drinking Water?
Veterinary references checked with PetHealth+ · Last reviewed June 2026
By Kaiser Khan , Founder Veterinary references checked with PetHealth+ ( process ) Last reviewed Cite this page How we research & review
Skipping water for a short time may follow stress or mild nausea, but no drinking for 24 hours risks dehydration — especially in puppies, seniors, and small breeds.
Possible causes
Mouth pain, nausea, kidney disease, and fever can reduce thirst.
Dehydration signs
Sticky gums, skin tenting, sunken eyes, and lethargy.
Encouragement
Offer fresh cool water, ice cubes, or low-sodium broth — but investigate if refusal continues.
Related: Dog vomiting causes · Kidney disease in cats
Frequently asked questions
How long without water is dangerous?
Beyond 24 hours warrants a vet visit; puppies dehydrate faster.
Can wet food replace water?
Wet food helps hydration but does not replace free access to water.
Why won't my dog drink after surgery?
Nausea from anaesthesia is common — call your vet if it persists.
Does excessive drinking mean the opposite problem?
Yes — drinking lots can signal diabetes or kidney disease; see excessive drinking guide.