Heatstroke in Pets: Signs, Symptoms and What to Do

June 8, 2026

At last…June brings us longer days and warmer weather, perfect for dog walks around Northamptonshire and garden adventures with your pet. But as temperatures climb, so does the risk of heatstroke, and it can escalate faster than many owners realise.

Our veterinary team at Northlands will walk you through the early warning signs of heatstroke in dogs, cats, rabbits and small pets, and what to do if you’re concerned.

If you suspect your pet may be suffering from heatstroke, don’t wait, call us immediately for advice on 01536 485543.

Book a summer health check

 

Signs and symptoms of heatstroke in pets

Our vets at Northlands explain that the early warning signs of heatstroke can vary between species, but there are key indicators every owner should know:

Dogs and cats

  • Excessive panting or difficulty breathing: heavy, laboured breathing that seems out of proportion to their activity level.
  • Drooling more than usual: excessive saliva.
  • Lethargy or weakness: your pet seems unusually tired, confused or unsteady on their feet.
  • Increased heart rate: a fast pulse could signal overheating.
  • Vomiting or diarrhoea: digestive upset can occur as the body struggles to regulate temperature.

Rabbits and small pets

Rabbits and small pets are among the most vulnerable in warm weather because they can’t pant or sweat effectively, yet they’re often the most overlooked.

  • Rapid or shallow breathing: breathing changes are a serious early sign.
  • Lethargy and flopping: a pet lying flat and unresponsive in the heat requires immediate attention.
  • Wet nose or ears: some small pets may dampen themselves to cool down.
  • Loss of appetite: small pets who suddenly stop eating in warm weather may be struggling with the heat.

What to do if you think your pet has heatstroke

If you suspect heatstroke, stay calm but act quickly. Our vets in Kettering recommend the following steps while you arrange emergency care.

  • First, move your pet indoors/away from the heat source. For pets comfortable with water, you can gently pour cold (not freezing) water over their body, keeping it away from their face, nose and mouth.  .
  • Open windows and doors or switch on a fan or air conditioning to create a breeze and offer cold water to drink.
  • Place them on top of a cold wet towel rather than wrapping them in it, as this traps heat. If you have an ice pack, wrap it in a towel and place it between their thighs (dogs), or next to or beneath smaller pets.
  • Our vets at Northlands stress that even if your pet seems to be recovering, always call us straight away.

While the idea of heatstroke can be scary, knowing the signs and what to do could make all the difference for your pet this summer in Northamptonshire. If you’d like peace of mind, book a summer health check with our team today.

Book a summer health check 

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