Skip to Main Content
Ask About Financing

Fever in Dogs

Fever in dogs doesn't happen often and when it does happen it can be difficult to tell the signs. Here, our Animal Emergency Clinic vets in St. Louis explain the signs of a fever in dogs and what you should do if your dog is experiencing these symptoms. 

What is a normal temperature for a dog and what temperature is a dog fever? 

A dog’s normal body temperature ranges from 101° to 102.5° Fahrenheit, which is significantly higher to humans whose body temperature ranges from 97.6° to 99.6° F. 

A temperature of more than 103° F is considered a dog fever. When temperatures reach 106° F, serious and fatal complications can occur. 

How can I tell if my dog has a fever and how do I take its temperature? 

Fevers in dogs can be tough to determine as there are a variety of other factors that could increase your dogs temperature. Also, a dog’s temperature can vary throughout the day and sometimes at night.  Therefore, it is important to understand your dog’s healthy temperature. You can determine this by noting your dogs temperature at various times of the day, for several days.

Some people believe that if you feel your dog’s nose and if it’s wet and cold your dog’s temperature is fine, and if it is hot and dry it means a fever.  However, this is not an accurate indicator that your dog has a fever.  

The best way to check your dog’s temperature is to use a digital thermometer for rectal use, some pet stores carry thermometers made just for pets.  It is recommended that you keep a separate thermometer just for your dog and store it where you keep your dog’s supplies. 

Start by lubricating the tip of the thermometer with petroleum or water-soluble lubricant. Then lift your dog’s tail up and to the side and carefully insert the thermometer about 1 inch into your dog’s rectum. If possible, have a second person assist you by holding under the dog’s hind legs to prevent your dog from sitting. Once the thermometer temperature has registered you can carefully remove the thermometer.  

Why would a dog have a fever?  

A variety of illnesses and conditions may cause a fever in your dog. These include:

  • A bacterial, fungal or viral infection
  • An ear infection
  • An infected bite, scratch or cut 
  • Tooth infection or abscess
  • Urinary tract infection 
  • Ingestion of poisonous materials, such as toxic plants, human medications, or human foods that are toxic to dogs

In some cases, a dog’s fever cannot be readily determined, this is often referred to as a fever of unknown origin, or FUO. In these cases a fever could be caused by underlying disorders of the immune system, bone marrow problems, or cancer.

What are symptoms of a fever in dogs?  

If you notice a significant change in your dog’s behavior this will be your first sign that your dog is not well. You should keep a careful eye on your dog and take note of your dogs symptoms. The following symptoms are some of the most common if your dog is suffering from a fever.  

The typical signs of fever in dogs are: 

  • Red or glassy-looking eyes
  • Warm ears and/or nose 
  • Shivering
  • Panting 
  • Runny nose 
  • Decreased energy 
  • Loss of appetite
  • Coughing 
  • Vomiting

How should I care for a dog with a fever? 

It is important to note that if your dog has a fever of 106° F or higher you should bring your dog to our St. Louis veterinary emergency clinic immediately. 

If your dog has a fever of 103° F or more, you can help to cool your dog’s body temperature by applying cool water with a soaked towel or cloth to your dogs ears and paws, and run a fan near your dog.  Stop applying the water when your dog’s temperature drops below 103° F.  Continue to monitor your dog closely to ensure that the fever doesn’t return.  

Try to coax your dog to drink small amounts of water to stay hydrated while they are experiencing the fever, but don’t force your dog to drink. 

If your dog has a fever you should be sure to never give them any kind of human medications, such as acetaminophen or ibuprofen.  These medications can be poisonous to your dog and cause serious injury or death. 

If your dog exhibits any other symptoms, such as shivering, panting and vomiting you should consider taking your dog to the vet.  

Note: The advice provided in this post is intended for informational purposes and does not constitute medical advice regarding people or pets. Always follow your doctors advice regarding asthma or other allergy symptoms. 

Are you worried that your dog may be showing signs of a fever? Please contact our St. Louis emergency vets today to have your dog treated.

Compassionate Emergency Care for Pets

Animal Emergency Clinic is an after-hours emergency animal hospital providing urgent care to cats and dogs from St. Louis and surrounding areas. Contact us right away if you are experiencing a veterinary emergency.

Contact Us

Contact