The Heat Is On: Why Summer’s a Risk for Pets

New Zealand summers can be brutal. Between soaring temperatures, sticky humidity, and the temptation to take our furry friends on every outdoor adventure, it’s easy to forget that dogs and cats don’t handle heat the way we do.


Unlike humans, they can’t sweat efficiently. Dogs rely on panting, and cats use grooming to cool down — both of which are limited when the air itself feels like soup.


So whether it’s dogs and summer adventures or lazy afternoons with your cat, knowing how to prevent heat stroke in dogs and cat heat stroke is essential for a safe season.



How Hot Is Too Hot?

A simple rule of thumb:
If you can’t walk barefoot on the pavement for more than five seconds, it’s too hot for your pet’s paws.


Even mild days can be risky in direct sun or enclosed spaces. Remember:

  • Cars can reach 40°C in just 10 minutes.
  • Dogs with flat faces (like Bulldogs or Pugs) overheat twice as fast.
  • Cats trapped in sunny rooms without airflow can quietly suffer dehydration or heat stress.

1. Heatstroke: The Big One to Watch


Heat stroke in dogs is a life-threatening emergency. It happens when their body temperature rises above 40°C, and they can’t cool down fast enough.


Warning signs include:

  • Heavy panting or drooling
  • Lethargy, confusion, or wobbling
  • Vomiting or diarrhea
  • Bright red or pale gums
  • Collapsing or unresponsiveness

If this happens — move your pet into the shade, pour cool (not icy) water on their body, and call your vet immediately.


Cats are more subtle — cat heat stroke may look like rapid breathing, drooling, or hiding. If your cat feels hot to the touch and isn’t responding normally, it’s time to head to the vet.

Pro tip: Avoid midday walks, use shaded routes, and keep exercise to early morning or evening.


2. Dehydration: The Silent Threat


You might think your dog or cat is fine because their water bowl is full — but dehydration in dogs and cats’ dehydration can sneak up fast.


Common signs of dehydration:

  • Sticky gums or dry nose
  • Sunken eyes
  • Lethargy or reduced appetite
  • Skin doesn’t bounce back when gently pulled

Hydration hacks:

  • Keep multiple bowls around the house.
  • Add ice cubes to water bowls on hot days.
  • Try pet-safe ice treats or frozen broth cubes.
  • For cats in hot weather, offer wet food or even a little tuna juice to tempt picky drinkers.

If your pet shows symptoms, get veterinary attention quickly — dehydration can lead to kidney damage, especially in older pets.


3. Sunburn: Yes, It’s a Thing


Just like us, dogs and cats can get sunburnt. Short-haired, light-coloured, or hairless breeds are most at risk — think white cats, Dalmatians, Bull Terriers, and Greyhounds.


Sunburn most commonly affects the nose, ears, and belly, and repeated exposure can cause skin cancer over time.


That’s where dog sunscreen comes in. Yes, it exists (and no, you shouldn’t use human sunscreen — zinc oxide is toxic to pets!). Apply pet-safe sunscreen to vulnerable areas before outdoor play.


Dogs’ sunburn prevention checklist:

  • Avoid sunbathing between 10 a.m. – 4 p.m.
  • Use shade tents or cooling mats.
  • Don’t shave double-coated breeds — fur protects against both heat and sunburn.


Keeping Pets Cool in Summer: Simple Tricks That Work

Here’s how to keep dogs cool in summer and cats comfortable when temperatures rise:


For Dogs:

  • Provide cooling mats or damp towels to lie on.
  • Set up a kiddie pool for splashing.
  • Freeze toys or treats for enrichment.
  • Avoid dark car seats or asphalt walks.
  • Brush regularly — matted fur traps heat.

For Cats:

  • Leave fans running or open windows with screens.
  • Offer shaded hideaways away from direct sunlight.
  • Swap dry food for moist meals to increase water intake.
  • Wipe paws and belly with a damp cloth for instant cooling.

Want more fun, practical ideas? Check out Ensuring a Happy, Safe Dog Summer for extra pet summer safety tips.



Real-Life Risks: When Fun Turns Furry-Frightening

It doesn’t take much for a fun day out to turn dangerous:

  • A long beach walk without shade.
  • A car ride “just for a few minutes.”
  • A cat sunbathing in a closed conservatory.

Even responsible owners sometimes slip up — and that’s okay, as long as you know what to do next.


Having cover like Pet Insurance ensures you can handle accidents and heat-related emergencies without panic. It’s there for those “oh no” moments you didn’t plan for.



Common Questions from Kiwi Pet Owners

Can my dog swim to cool down?
Absolutely — just rinse salt or chlorine afterward and dry their ears to prevent infections.


Can I leave my cat home alone on hot days?
Yes, but ensure ventilation, shaded spots, and plenty of water. Consider leaving a fan or air-con running.


What’s the best time for walks?
Early mornings or evenings when temperatures drop. Always carry water.


Do older pets need special care?
Yes — seniors and pets with heart, kidney, or breathing issues are more vulnerable. Keep activity light and frequent breaks mandatory.


Do I need to reapply sunscreen?
Yep! Reapply dog sunscreen every 2–3 hours, especially after swimming or towel drying.



The Financial Reality of Summer Emergencies

Heat-related vet visits can cost anywhere from $150 for mild dehydration treatment to $1,000+ for hospitalisation due to heat stroke in dogs or cat heat stroke. Add diagnostics, IV fluids, and medications — and that spontaneous beach trip might suddenly come with a hefty invoice.


With Dog Insurance, you get protection for active dogs in summer, including cover for accidents, infections, and emergency treatments. For feline friends, Cat Insurance covers vet treatment after sunburn or dehydration — giving you confidence that help is there when it counts.



5 Quick Summer Safety Reminders

  1. Never leave pets in parked cars. Even “just five minutes” can be fatal.
  2. Hydrate constantly. Carry collapsible bowls or bottles for walks.
  3. Provide shade at all times. Trees, tents, or umbrellas work wonders.
  4. Watch the paws. Pavement burns are common — walk early or late.
  5. Know your pet’s limits. Dogs will keep running to please you; it’s your job to stop them before they overheat.

And if you’re still pushing your pooch too hard, maybe give this one a read: 5 Bad Habits Dog Owners Should Stop.



Preparing for the First Day of Summer

December 1st marks the official start of summer — and it’s your reminder to check your pet summer safety checklist:

  • Is your water bowl clean and full?
  • Do you have pet-safe sunscreen on hand?
  • Are you walking at the right times?
  • Do you know the signs of heatstroke and dehydration?

A little preparation means more beach days, fewer vet visits, and happier tails all around.


So here’s to a safe, sunny, wag-filled summer — and to keeping pets cool in summer without the drama.


If things ever do go sideways, though, remember: Pet-n-Sur Pet Insurance has you covered for accidents and heat-related emergencies, so you can focus on fun, not finances.


Stay cool, stay safe, and give your pets an extra ice cube for us.