Cats are notoriously secretive animals. They don't complain when they're too hot, they don't beg for water the way dogs do, and they certainly won't tell you when something feels off. That's what makes summer dehydration in cats one of the most overlooked — and most common — problems during the warmer months.
Unlike dogs, cats evolved as desert animals. Their bodies were designed to get most of their hydration from prey, not from a water bowl. This means that even under normal conditions, cats don't feel a strong urge to drink. Add Indian summer heat to that equation, and the gap between how much water they need and how much they're actually consuming can quietly become dangerous.
Why Summer Is a Particularly Risky Time for Cats
Cats need roughly 50–60 ml of water per kilogram of body weight every day. During summer, that requirement goes up — but their drinking habits rarely change to match. Higher temperatures mean more water is lost through grooming and respiration. Cats who lounge near sunny windows, spend time on balconies, or live in homes without proper ventilation are especially at risk.
There's also the food factor. Cats on an all-dry-food diet are already working at a hydration deficit — dry kibble contains only about 10% moisture. Wet food, by contrast, is around 70–80% water. During summer, this difference becomes even more significant.
Things to Look Out for This Summer
Cats are masters at hiding discomfort, which is why knowing what to look for is so important. Watch your cat closely during peak summer months for any of the following:
- Drinking more water than usual (or noticeably less)
- Dry or sticky gums
- Sunken or dull-looking eyes
- Skin that doesn't snap back quickly when gently pinched
- Lethargy or low interest in play
- Loss of appetite
- Reduced visits to the litter box, or very concentrated urine
- Unusual panting (which is rare in cats and always worth attention)
- Seeking out cooler tiles or flat surfaces to lie on
A quick way to check at home is the skin turgor test: gently pinch the skin at the back of your cat's neck and let go. In a well-hydrated cat, it snaps back immediately. If it returns slowly or stays "tented," dehydration may already be setting in.
Signs Your Cat May Need Immediate Veterinary Attention!
Some symptoms go beyond mild dehydration and require prompt veterinary care. If your cat is showing any of the following, don't wait:
- Vomiting or diarrhea
- Complete refusal to eat or drink
- Extreme lethargy or inability to stand
- Disorientation or confusion
- Rapid or laboured breathing
Severe dehydration can affect kidney function, blood pressure, and organ health very quickly in cats. Acting early is always the right call. Consult the Vets at Zigly if you're unsure — it's always better to check than to wait.
Prevention: How to Keep Your Cat Hydrated All Summer Long
Make fresh, clean water available at all times — and not just in one spot. Place multiple water bowls around the house so your cat always has easy access, regardless of where they're resting. Change the water at least twice a day and wash the bowls regularly. Cats are sensitive to smell and taste, and stale water is often the reason they turn their nose up at the bowl entirely.
Pro tip:Add a couple of ice cubes to your cat's bowl on especially hot days. It keeps the water cool and fresher for longer — and many cats find it quite fascinating.
Also consider the bowl material. Plastic retains odours over time and can put cats off drinking. A ceramic bowl or a stainless-steel bowl is a far better choice.
Many cats are instinctively drawn to moving water — it signals freshness in the wild. A pet water fountain mimics this, encouraging cats to drink more naturally and consistently throughout the day.
You don't have to overhaul your cat's entire diet — but incorporating wet food into at least one meal a day is one of the easiest ways to increase their daily water intake without relying on them to drink more.
Think of every bowl of wet food as a hydration boost built right into mealtime. During summer, this matters more than ever.
Another easy trick is adding a splash of plain, unsalted broth to your cat's food — chicken or fish broth works well. Just make sure it contains no onion, garlic, or added salt, both of which are harmful to cats. Some pet stores also stock cat-specific hydration gels and broth toppers.
Hydration isn't just about drinking — it's also about reducing how much water your cat loses. Make sure they have access to shaded, ventilated areas of your home during the hottest parts of the day. Draw curtains or blinds to prevent indoor temperatures from rising. If possible, keep at least one room comfortably cool.
A cooling mat for pets can also be a great investment. Place one in your cat's favourite resting spot and watch them gravitate toward it. Unlike blankets or padded beds that trap heat, cooling mats provide a consistently comfortable surface — no electricity required.
Regular grooming in summer helps remove excess fur and prevents matting, which can trap heat against your cat's body. However, resist the urge to shave your cat completely — their coat also acts as insulation and protects against sunburn. A neat summer trim from an expert groomer at Zigly is a much better approach.
Quick Checklist you can screenshot to Keep Handy This Summer
- Fresh water available in multiple spots at all times
- Water bowls cleaned and refilled at least twice a day
- Ice cubes added to water bowl during peak heat
- Wet food included in at least one daily meal
- Cat water fountain considered for reluctant drinkers
- Cooling mat placed in favourite resting area
- Home environment kept shaded and ventilated during the day
- Signs of dehydration monitored daily
- Vet contacted immediately if serious symptoms appear
Your cat won't ask for help when the heat gets to them — that responsibility falls on you. But the effort it takes to keep them cool and hydrated is genuinely small compared to the difference it makes. A fresh bowl of water here, a serving of wet food there, a cooling mat in the corner — these are simple things, but they add up.
Here's to a safer, cooler summer for your feline companion.
If you found this useful, explore our related guides on summer grooming for cats and how to tell if your pet is overheating. And as always, our Vets at Zigly are here if you need personalized advice for your cat's health.
