How to check if your dog has a fever
Dogs can develop a fever, just like us. Sometimes, taking their temperature is necessary. You'll need a thermometer, as you can't tell if your dog has a fever simply by feeling their paws or nose.
A dog's normal temperature at rest is between 37.5°C and 39.0°C. If your dog has recently been exercising, their temperature could be as high as 40.0°C without them actually having a fever. Stress and the ambient temperature can also cause a dog's body temperature to rise. Heatstroke can cause a severe temperature increase, which can be fatal if the dog isn't helped quickly. Learn more about heatstrokehere.
What causes a fever in dogs?
A fever is a symptom, signalling your dog's inflammatory response to an illness. This is because many bacteria and viruses struggle to survive at high temperatures. However, fevers can also occur in conditions not linked to bacteria or viruses. Some autoimmune diseases and tumours have been known to cause fevers in dogs.
It's also quite normal for a dog to have a mild, temporary fever after being vaccinated. The vaccine essentially 'tricks' the body's immune system into reacting as if it were a natural infection.
Signs of a fever
As well as a raised body temperature, dogs might show other symptoms that suggest they have a fever. If you suspect your dog has a fever, it's a good idea to take their temperature and then adjust their daily routine to suit their needs.
Some common signs of fever include:
Being more tired than usual
Having a reduced appetite
Drinking more than usual
Panting
Redder gums than usual
How to take your dog's temperature
To take your dog's temperature, you'll need:
A rectal thermometer
Lubricating ointment (like Vaseline)
Try to keep your dog calm, perhaps offering a treat to create a positive experience. Your dog should have rested for at least 20 minutes before you take their temperature. Apply Vaseline to the thermometer to make insertion easier and reduce discomfort. Gently stroke your dog's back and locate the anal opening with the thermometer before inserting it to take the reading. The thermometer should be inserted about 1-1.5 cm.
Treating a fever
Just like humans, dogs need rest when they have a fever. However, if your dog's body temperature is significantly above normal, and they also seem generally unwell, weak in their hindquarters, or unwilling to move, you should seek veterinary advice.
If you're concerned about your dog's well-being, we recommend contacting a vet. As a Lassie insurance customer, you have unlimited video calls with our digital vet service for advice.
