How to Take a Dog’s Temperature

Monitoring a dog’s temperature is an important skill for pet owners, especially if a dog appears unwell. A dog’s body temperature can indicate fever, infection, heatstroke, or hypothermia, and knowing how to check it accurately can help determine when veterinary care is needed.

This guide covers everything you need to know about taking a dog’s temperature, including normal temperature ranges, different methods, step-by-step instructions, and when to seek veterinary attention.

Why is checking a dog’s temperature important?

A dog’s temperature provides essential information about their health.

• A high temperature may indicate fever, infection, heatstroke, or inflammation.
• A low temperature can occur due to shock, hypothermia, or serious illness.
• Tracking a dog’s temperature can help monitor recovery from illness or surgery.

If a dog shows signs of illness, checking their temperature can help determine if urgent veterinary care is needed.

What is a normal temperature for a dog?

A healthy dog’s normal body temperature ranges from 38.3°C to 39.2°C.

• A temperature above 39.5°C suggests fever or heatstroke.
• A temperature below 37.5°C may indicate hypothermia or shock.

Minor fluctuations can occur due to stress, excitement, or environmental factors, but persistent abnormal temperatures require veterinary attention.

Methods for taking a dog’s temperature

There are two primary methods for measuring a dog’s temperature.

Rectal thermometer

This is the most accurate method and involves inserting a thermometer into the rectum. A digital rectal thermometer is recommended for quick and precise readings.

Ear thermometer

This measures infrared heat from the eardrum. It is less invasive but can be less accurate, especially if the dog has an ear infection or excessive wax buildup.

Supplies needed

Before taking a dog’s temperature, gather the following supplies:

• A digital rectal thermometer or a pet-specific ear thermometer
• Lubricant such as petroleum jelly or water-based gel for rectal thermometers
• Cotton wool and antiseptic wipes to clean the thermometer
• Treats or a toy to reward the dog afterward
• An assistant to help hold the dog if necessary

How to take a dog’s temperature with a rectal thermometer

Using a rectal thermometer provides the most accurate reading but requires patience and care.

Step one – prepare the thermometer

• Use a digital thermometer designed for pets.
• Apply a small amount of lubricant to the tip to ease insertion.

Step two – safely restrain the dog

• Place the dog on a flat, non-slip surface.
• Have an assistant gently hold the dog in place, keeping them calm.
• If alone, position the dog so they are standing or lying on their side.

Step three – lift the tail and insert the thermometer

• Lift the dog’s tail gently.
• Insert the thermometer about one to two centimetres into the rectum.
• Hold the thermometer still until it beeps if digital, or wait for the reading to stabilise if using a manual thermometer.

Step four – read and record the temperature

• Remove the thermometer and read the temperature immediately.
• Clean the thermometer with antiseptic wipes before storing it.

How to take a dog’s temperature with an ear thermometer

Ear thermometers are less invasive but may be less accurate.

Step one – prepare the thermometer

• Use a pet-specific ear thermometer, as human models may not be accurate for dogs.

Step two – position the thermometer in the ear

• Hold the dog’s head still and gently lift the ear.
• Insert the thermometer into the ear canal, ensuring it makes contact with the inner ear.

Step three – take the reading

• Hold the thermometer in place until the reading is displayed.
• Remove the thermometer and check the temperature.

What to do if the temperature is abnormal

If a dog’s temperature is outside the normal range, further action may be needed.

High temperature (above 39.5°C)

• Move the dog to a cool, shaded area.
• Offer small amounts of cool water to drink.
• Apply a cool, damp cloth to the paws, ears, and belly.
• Contact a vet if the temperature remains high or the dog appears weak.

Low temperature (below 37.5°C)

• Wrap the dog in a warm blanket.
• Place a warm water bottle wrapped in a towel near them.
• Move the dog to a warm indoor area.
• Seek urgent veterinary care if the temperature does not rise.

When to seek veterinary care

Immediate vet care is required if

• The temperature is above 40°C or below 37°C.
• The dog has other symptoms such as vomiting, lethargy, or difficulty breathing.
• The dog is unresponsive or in distress.
• The temperature remains abnormal despite home care.

Tips for making temperature checks easier

• Handle the dog gently and speak in a soothing voice.
• Use treats or positive reinforcement to create a stress-free experience.
• Keep a record of temperature readings for the vet.
• Practise handling the dog’s tail and ears regularly to desensitise them.

Conclusion

Taking a dog’s temperature at home is a useful skill for monitoring their health. Using a rectal thermometer provides the most accurate reading, while an ear thermometer offers a less invasive alternative. If a dog’s temperature is abnormal, appropriate steps should be taken, and veterinary care should be sought when necessary.

Regular monitoring and understanding the signs of fever or hypothermia can help detect illnesses early and ensure prompt treatment.