Amelia Taylor – Cornell University College of Veterinary Medicine
What is a Normal Temperature for Dogs?
- The normal range for a healthy dog’s body temperature is 101°F to 102.5°F (38.3°C to 39.2°C)
- Any temperature exceeding 103°F (39.4°C) is regarded as a fever.
- Temperature exceeding 106°F (41.1°C) are hazardous and may be fatal.
Signs That Your Dog Has Fever
Dogs can not communicate their emotions to us, therefore be aware of these typical signs:
- A warm nose or ears are frequently the first thing pet owners notice.
- Lethargy or shivering: Refusing to play or acting abnormally exhausted.
- Appetite loss: skipping meals or turning down sweets.
- Watery discharge or red eyes might be signs of an infection or inflammation.
- Excessive panting, even in the absence of exertion.
- A disheveled coat or decreased grooming is an indication that they are not feeling well.
- Coughing or vomiting: Occasionally connected to an illness.
⚠️ Keep in mind that feeling your dog’s head or nose by itself is not a reliable way to detect fever.
How to Take a Precise Temperature Reading of Your Dog
Using a thermometer to take your dog’s temperature is the only accurate method of confirming a fever:
- For the fastest and most accurate reading, use a digital rectal thermometer designed for dogs.
- Use a tiny bit of lubrication that is safe for pets, such as petroleum jelly.
- Carefully place the thermometer into your dog’s rectum, about 1 inch deep.
- After you hear the buzzer, note the reading.
📌 Advice: Ask your veterinarian about dog-specific ear thermometers if your dog can’t stand this, however they might not be as accurate.

Common Reasons for Fever in Dogs
- Bacterial, viral, or fungal infections (usually in the urinary tract, lungs, or skin).
- Vaccinations: It’s common to have a mild fever 24 to 48 hours after receiving a shot.
- Injuries or inflammation, such as bites, cuts, or tooth infections.
- Toxins: Consuming dangerous materials such as chemicals, plants, or food.
- Immune system problems: uncommon but potential underlying disorders.
What You Can Do At Home
If there are no serious symptoms and your dog has a moderate temperature (103–104°F):
- Offer cold, fresh water and encourage little sips.
- Provide a nice, peaceful area for them to relax; make sure they’re comfortable.
- Apply a moist, cold towel to the ears and paws gently.
- Keep a tight eye on them by taking their temperature every couple of hours.
⚠️ Do NOT give human medications (like Tylenol, Advil, or aspirin) — these can be toxic to dogs.
When to Contact the Vet
- Consult a veterinarian if the temperature is higher than 104°F or lower than 99°F.
- The duration of the fever exceeds 24 hours.
- Your dog exhibits severe symptoms, including vomiting, convulsions, unconsciousness, and refusal to eat or drink.
- You suspect a major infection or poisoning.