Taking a Dog’s Temperature: Safe and Easy Methods to Measure

Written by Chanel Coetzee
Updated: July 21, 2023
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Many people don’t know how to take a dog’s temperature. In fact, most people don’t know what a dog’s temperature should be. But don’t be alarmed if your pup has a higher temperature than you; it is normal for dogs to be a bit warmer than humans, which is why they make the perfect snuggle companions. However, owners must know how to work a thermometer and interpret its reading. Therefore, below is a guide on taking a dog’s temperature using safe and easy methods.

What Should Your Dog’s Temperature Be?

A dog’s temperature should always range from 101° to 102.5° Fahrenheit, which is higher than humans, with temperatures between 97.6° to 99.6° Fahrenheit. As a result, dogs with a temperature of 103 or higher must see a vet immediately, as they may have a fever or something worse. If your dog has a temperature of 106 ° Fahrenheit, fatal complications can occur.

How To Take a Dog’s Temperature

There are three important factors to consider when taking a dog’s temperature. First, you need to decide what thermometer you are going to use. Second, you must know how to use the thermometer to obtain the most accurate reading. Lastly, you need to know how to interpret the reading.

Deciding On a Thermometer

Since several types of dog thermometers are available these days, owners must decide which will work best for their pups. However, certain thermometers work better than others. You might already have a thermometer at home, but if you are shopping for one, it’s best to know how they work and choose the best fit for your circumstances.

Ear Thermometers

The ear thermometer is one of the better options available as it is less invasive and relatively accurate. These thermometers have been around for a long time, and many people find them very effective. It is the perfect choice for owners who have nervous dogs that don’t like being touched. However, it is not as accurate as a rectal thermometer since dogs have long, horizontal ear canals with lots of hair and wax, which can affect the reading.

Non-contact Infrared Thermometers

Since the pandemic, people have become more exposed to non-contact infrared thermometers, especially when visiting childcare facilities, doctor’s offices, and hospitals. They work by using infrared heat waves to determine the body temperature without touching the skin. While this might work well on people who don’t have fur coats, it does not deliver accurate results on dogs. Additionally, this thermometer is often a few degrees off, even when measured against hairless areas like the inner thighs or ears.

However, using a non-contact thermometer might be your only choice when the dog is extremely anxious or aggressive, and it’s a useful way to get an approximate reading. But, ensure to use it on a relatively hair-free area, like the ears or inner thigh. Furthermore, trust your intuition. Don’t second guess yourself if you feel something is wrong, but the reading is normal. Take your pup to the vet as soon as possible.

Non-contact infrared thermometer on white wooden background to measure a body temperature. Healthcare and medical theme.

Using a non-contact thermometer might be your only choice when the dog is extremely anxious or aggressive, and it’s a useful way to get an approximate reading.


Image: Faizal Ramli, Shutterstock

©Faizal Ramli/Shutterstock.com

Glass Thermometers

These thermometers aren’t readily available in stores anymore, but some owners may still have them in their homes. However, glass thermometers are not a good option for dogs. When taking a dog’s temperature, the dog may move, spin, or jump, which may cause you to drop the thermometer, and it could shatter. This is dangerous and should be avoided at all costs, especially if it’s a mercury thermometer.

Medical glass old mercury thermometer isolated on white background. Design element with clipping path

Glass thermometers are not a good option for dogs. When taking a dog’s temperature, the dog may move, spin, or jump, which may cause you to drop the thermometer, and it could shatter.


Image: Prokrida, Shutterstock

©Prokrida/Shutterstock.com

Rectal Thermometers

One of the best ways to take a dog’s temperature is with a rectal thermometer. But they are not made specifically for rectums. They are actually digital oral thermometers. However, you should never use this thermometer orally on a dog, as they might swallow or bite it. A rectal thermometer is the easiest and fastest way to get an accurate reading. And, while it is not the most pleasant experience for both owner and dog, the process is much simpler than you think.

Ultimately, the owner needs to decide which thermometer will work best, but rectal and ear thermometers are generally the best options.

Brave a dog during checking temperature rectally

One of the best ways to take a dog’s temperature is with a rectal thermometer.


Image: O_Lypa, Shutterstock

©O_Lypa/Shutterstock.com

Taking a Dog’s Temperature with a Rectal Thermometer

Below is a guide on the best way to take a dog’s temperature with a rectal thermometer:

Supplies

Before you begin, it is important to gather all your supplies first. When you are prepared, the process is easier for all parties involved. Owners will need:

  • A digital rectal thermometer
  • Animal-friendly lubricants like petroleum jelly
  • Paper towels

Clean the Equipment

Before inserting the thermometer into your dog, ensure it has been sanitized and cleaned. Then, cover it in the lubricant and make sure your dog is in a comfortable position.

Position Your Dog

While positioning your dog in a comfortable position is important, it is also essential that you keep your dog calm. Therefore, owners should place their pups in their laps or where they feel the most relaxed. Owners should also ensure they support their dogs by holding their abdomens when taking their temperatures.

Insert the Thermometer Into the Rectum

Once you have your dog in place, gently lift up its tail and carefully insert the thermometer into its rectum. But do not insert it too far. It only needs to go about an inch deep. However, inserting the thermometer two to three inches deep for larger dogs is fine. Next, hit the button on the thermometer’s handle to turn it on. Hold it still until it begins to beep, and you can see a reading on the screen.

Remove the Thermometer

After the thermometer has beeped, gently remove it from the dog’s rectum and record the reading. Shower them with praise or treats to ensure this is not a traumatic experience for your dog. Lastly, sanitize and clean the end of the thermometer before putting it in a safe, dry place.

Taking a Dog’s Temperature with an Ear Thermometer

If your pup has a nervous nature and you think they won’t react well to a rectal thermometer, then an ear thermometer is the best option. Below is a guide on taking your dog’s temperature with an ear thermometer.

Supplies

Again, ensure you are prepared by having all your supplies ready to go. Luckily for this reading, all you need is the ear thermometer and the disposable tip covers.

Position Your Dog

If you have a nervous dog, it’s best to have two people when taking its temperature, one to hold the dog and one to take the reading. Ensure your dog is comfortable by keeping them on your lap or stroking them while they stand.

Using the Ear Thermometer

Firstly, do not clean your dog’s ear before taking its temperature. The cleaning solution may lower the temperature inside the ear. Gently lift the pup’s ear flap, carefully insert the thermometer at a 90-degree angle from its head, and turn it on. However, do not push the thermometer too far into the ear. The thermometer might be too far in if your dog shows any signs of resistance.

Once the thermometer beeps and the reading is visible on the screen, you can remove it from the dog’s ears and record the temperature. Ensure to praise or reward your dog with treats so it associates this ordeal with something positive. Lastly, clean the thermometer and place it in a clean, dry place.

The photo featured at the top of this post is © Javier Brosch/Shutterstock.com

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About the Author

Chanel Coetzee is a writer at A-Z Animals, primarily focusing on big cats, dogs, and travel. Chanel has been writing and researching about animals for over 10 years. She has also worked closely with big cats like lions, cheetahs, leopards, and tigers at a rescue and rehabilitation center in South Africa since 2009. As a resident of Cape Town, South Africa, Chanel enjoys beach walks with her Stafford bull terrier and traveling off the beaten path.

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