How to Take a Cat’s Temperature

Monitoring a cat’s temperature is an essential skill for owners, especially if a cat appears unwell. A cat’s normal body temperature is higher than a human’s, and an abnormal temperature can indicate illness, infection, or distress.

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

Why is checking a cat’s temperature important?

A cat’s temperature can reveal important information about their health.

• A high temperature may indicate infection, inflammation, or heatstroke.
• A low temperature may occur due to shock, prolonged exposure to cold, or serious illness.
• Tracking a cat’s temperature can help monitor their recovery from illness or surgery.

What is a normal temperature for a cat?

A healthy cat’s body temperature should be between 38.1°C and 39.2°C.

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

Slight fluctuations may occur due to stress, exercise, or environmental changes, but persistent abnormal temperatures require veterinary attention.

Methods for taking a cat’s temperature

There are two main ways to check a cat’s temperature.

Rectal thermometer, which is the most accurate method

A rectal thermometer provides the most reliable temperature reading. It involves inserting a digital or mercury thermometer into the cat’s rectum.

Ear thermometer, which is less accurate but less invasive

An ear thermometer measures infrared heat from the eardrum. It is easier to use but can be less accurate if the cat has ear infections or excessive earwax.

Supplies needed

Before taking a cat’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 cat afterward
• An assistant to help restrain the cat if necessary

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

Using a rectal thermometer is the most accurate method, but it requires patience and care.

Step one is to prepare the thermometer

• Use a digital thermometer designed for pets, as it provides a quick reading.
• Apply a small amount of lubricant to the tip to ease insertion.

Step two is to safely restrain the cat

• Place the cat on a flat, non-slip surface.
• Have an assistant gently hold the cat in place, keeping them calm.
• If alone, wrap the cat in a towel to prevent struggling.

Step three is to lift the tail and insert the thermometer

• Lift the cat’s tail gently.
• Insert the thermometer about one to two centimetres into the rectum.
• Hold the thermometer still until it beeps if digital or the mercury stabilises if using a traditional thermometer.

Step four is to 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 cat’s temperature with an ear thermometer

Ear thermometers are less invasive but can be less accurate.

Step one is to prepare the thermometer

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

Step two is to position the thermometer in the ear

• Hold the cat’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 is to 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 cat’s temperature is outside the normal range, further action may be needed.

A high temperature above 39.5°C

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

A low temperature below 37.5°C

• Wrap the cat in a warm blanket.
• Place a warm water bottle wrapped in a towel near them.
• Move the cat 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 cat has other symptoms such as vomiting, lethargy, or difficulty breathing.
• The cat is unresponsive or in distress.
• The temperature remains abnormal despite home care.

Tips for making temperature checks easier

• Handle the cat 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 cat’s tail and ears regularly to desensitise them.

Conclusion

Taking a cat’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 cat’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.