You can tell if a dog has a fever by checking for the following signs:
1. **Temperature**: The most accurate way to determine if a dog has a fever is by taking its temperature rectally using a digital thermometer. A dog's normal temperature ranges from 99.5°F to 102.5°F (37.5°C to 39.2°C). Any temperature above this range may indicate a fever. Be sure to use a lubricated thermometer and insert it gently into the dog's rectum for about one minute.
2. **Behavioral Changes**: A dog with a fever may display changes in behavior. This can include lethargy, decreased activity, and reluctance to play or exercise.
3. **Loss of Appetite**: Fever can cause a loss of appetite in dogs. If your dog suddenly shows a lack of interest in food or refuses to eat, it may be a sign of illness.
4. **Shivering or Trembling**: Dogs with fever may shiver or tremble as their body tries to regulate its temperature.
5. **Warm Ears and Paws**: Feel your dog's ears and paws. If they feel warmer than usual, it could be a sign of fever.
6. **Dry or Warm Nose**: Contrary to popular belief, a warm or dry nose is not necessarily an indicator of fever in dogs. However, if your dog's nose is usually cool and wet and suddenly becomes warm and dry, it may be worth monitoring for other signs of illness.
7. **Increased Heart Rate**: A dog's heart rate may increase when they have a fever. You can check your dog's heart rate by feeling for their pulse on the inside of their hind leg or by using a stethoscope.
If you suspect that your dog has a fever based on these signs, it's important to consult with a veterinarian for an accurate diagnosis and appropriate treatment. Fever in dogs can be caused by various underlying health issues, including infections, inflammation, and other medical conditions.