Cats are famously picky drinkers. Their ancestors lived in dry regions and got most of their water from prey, so many cats have a naturally low thirst drive. Indoor cats on dry food can end up drinking less than they need.
How much water does a cat need?
A common guideline is roughly 40–60 mL of water per kilogram of body weight per day, including the water in their food. A 4 kg cat needs about 160–240 mL a day. Cats on wet food get a good share of this from their meals; cats on dry food need to drink most of it.
Signs your cat may not be drinking enough
- Low energy or hiding more than usual
- Dry or sticky gums
- Small, infrequent clumps in the litter box
- Skin that is slow to fall back when gently lifted at the shoulders
If you notice these signs, or your cat suddenly drinks much more or much less than normal, talk to your veterinarian.
7 easy ways to boost hydration
- Offer moving water. Many cats prefer flowing water. A pet water fountain keeps water moving, filtered and more inviting.
- Keep water away from food. Cats often avoid water placed right next to their food bowl or litter box.
- Use more than one station. Place bowls or fountains in two or three quiet spots around the home.
- Choose wide, shallow bowls. Some cats dislike their whiskers touching the sides. Stainless steel is easy to keep clean.
- Add wet food. Even one wet meal a day adds a lot of water to your cat's diet.
- Keep it fresh. Refresh water daily and wash bowls often.
- Try a cordless fountain. A wireless fountain can go anywhere your cat likes to rest, with no cord to chew.
Keeping a fountain clean
Rinse and refill the fountain every few days, take it apart for a full wash about once a week, and replace the filter as often as the instructions recommend (usually every 2–4 weeks). A clean pump also runs quieter and lasts longer.
This guide is general information, not veterinary advice. Always ask your vet about your own pet's needs.