Symptom: Increased Thirst – Why is my pet so thirsty?
Signs my pet has increased thirst
Drinking more than usual
Emptying their water bowl more quickly and often
Drinking from taps, puddles more than usual
Passing urine more often or larger amounts
Stopping more often on walks to wee
Weeing in the house during the day or overnight even if trained
Written by Dr. Mariella Roberts, Veterinary Surgeon, Animal Trust Vets CIC | Published October 2025 | Review date October 2028 | This advice is for UK pets only and is not a replacement for seeing a vet
Frequently asked questions
Why is my pet drinking more?
Pets can end up drinking more water than usual for many different reasons. Just like humans, pets could also become thirsty more quickly depending on how hot they are or what food they eat. However, there are certain underlying health problems that could also lead to extra drinking.
Reasons your dog maybe be drinking more water:
- your pet is hot
- your pet is bored
- your pet has eaten certain salter foods
- your pet’s medication (if on any) can be a cause
- your pet has an illness such as diabetes, Cushing's disease, Addison's disease, kidney disease and an infection of the womb (pyometra) in female dogs.
DOs - My pet is drinking more, what to do at home:
DON'Ts - My pet is drinking more, what not to do at home:
- Do not limit water access
- Do not assume is just a behavioural issue
- Do not self-diagnose or medicate
- Do not change diet abruptly
When should I think about going to the vet if my pet is drinking more?
If you notice your pet is drinking more than usual for more than 2-3 days and also if you notice any accompanied other accompanying symptoms like vomiting, weakness, collapse, seizures, or signs of severe distress, seek immediate veterinary attention.