Cats are famously bad at drinking water — many evolved to get most of their hydration from prey, and dry kibble doesn't make up for that. A few flavored ice cubes dropped in the water bowl can be enough to spark interest and increase how much your cat drinks over the day. The fishy aroma is the draw; the water is the point.
Ingredients
- 1 can (5 oz) tuna packed in water — packed in water only, not oil; no added salt
- 2 cups filtered water — or chilled, salt-free chicken broth
- A small pinch of dried catnip — optional, for extra interest
Instructions
- Drain the tuna, but reserve the tuna water in a measuring cup. The water from the can is the flavor base.
- Combine the reserved tuna water with 2 cups of filtered water. Stir.
- Optional: stir in a small pinch of catnip if your cat enjoys it.
- Pour the mixture into a clean ice cube tray. (Save the drained tuna for a separate small treat — or eat it yourself.)
- Freeze for at least 4 hours, or overnight. Once solid, transfer cubes to a freezer bag and use within 1 month.
- To serve: drop one cube into your cat's water bowl. As it melts, it gently flavors the water.
Portion guidance
One cube per cat per day, dropped into the regular water bowl. The point is to flavor the water, not to feed your cat tuna. Don't let the cubes replace plain fresh water — keep a clean bowl of plain water available at all times.
Frequency guidance
Use occasionally — not daily as a long-term routine. Tuna contains higher levels of mercury than many other fish, and even small amounts every day can add up over time. A reasonable cap is one cube no more than 2–3 times a week.
If your cat needs more water consistently, talk to your vet about better long-term tools: a pet water fountain, switching to wet food, or a different broth made from chicken instead of tuna.
Allergen notes
Contains fish (tuna). Skip this recipe if your cat has a known fish allergy or is on a hydrolyzed-protein diet for allergies. Catnip is optional and unrelated to allergens.
A note on positioning
This recipe is a healthy addition to your pet's regular diet — not a complete meal replacement. Always ensure your pet's primary diet is a nutritionally complete commercial food.
When dehydration is a real concern
If your cat is showing signs of dehydration — sunken eyes, lethargy, refusal to eat, vomiting — that's a vet visit, not a recipe. Cats can decline quickly when dehydrated. If your pet has any diagnosed health conditions (kidney disease especially), consult your veterinarian before introducing new foods.