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Tanya

How to know if your dog has a fever: signs and symptoms

My Labrador has been acting really off the last couple of days—he’s not eating much, sleeping a lot, and just seems sluggish. I’m worried he might have a fever, but I’m not sure how to check or what signs I should be looking for. What’s the best way to tell if a dog has a fever?

Emily Norton

What our expert says

Emily Norton
Veterinary Department Manager

Like us humans, when a dog is fighting an infection they may also have a fever (a high temperature). This can make them feel quite unwell. It can be difficult to tell if your dog has a high temperature without visiting the vets. But there are a few signs to look out for. 

Your dog may:

  • Feel hot to the touch, especially the ears
  • Have reddening on the gums
  • Pant more than usual

But these signs can also show on a hot day, and after exercise or excitement. Dogs with a true temperature are usually low in energy (lethargic). They may also not want to eat or drinking anything.

If you think your dog has a high temperature, go to your vet who will take their temperature using a thermometer. This is usually taken from a dog’s bottom (although some practices have ear thermometers).

Things to be mindful of:

  • Watch out for heat stroke (collapsing or difficulty standing, fast breathing, vomiting).
  • Don’t exercise your dog in the middle of the day when it’s very hot.
  • Don’t leave your dog in hot rooms or the car unsupervised.
  • If you’re concerned your dog is unwell, seek veterinary help as an untreated fever can be life-threatening. 

For more information on this topic, Emily Norton recommends these articles:

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