Normal ranges
| Reading | °F | °C |
|---|---|---|
| Normal | 101.0 to 102.5 | 38.3 to 39.2 |
| Fever | Above 103 | Above 39.4 |
| Emergency: high | 105 or more | 40.6 or more |
| Too low | Below 99 | Below 37.2 |
How to take it
A digital rectal thermometer is the most accurate home method. Lubricate the tip with petroleum jelly, have a helper hold your dog standing, lift the tail and insert about 1 inch (half that for small dogs) until it beeps. Ear thermometers made for pets are easier but less consistent. Warm, dry noses and ears tell you nothing reliable.
Signs of fever
- Lethargy, not eating
- Shivering
- Warm ears, red eyes
- Vomiting, coughing or nasal discharge if there's an infection
Never give human fever medicine: ibuprofen and paracetamol are dangerous for dogs.
When it's an emergency
Go to a vet now if your dog is at 105°F (40.6°C) or above, especially after heat or exercise (heatstroke), or below 99°F and weak. For heatstroke, move your dog somewhere cool and pour cool (not ice-cold) water over the body on the way. A temperature drop below 99°F in a heavily pregnant dog is different: it's a sign labor is near.
Frequently asked questions
Is a dog’s temperature higher after exercise?
Yes. It can rise a degree or two after exercise or excitement. Let your dog rest 20 to 30 minutes before measuring.
What is a normal cat temperature?
Similar to dogs: about 100.5 to 102.5°F (38.1 to 39.2°C).