Noticing when a dog has a fever can be tricky, but signs include warm ears, a dry nose, and lethargy. A dog's normal body temperature is about 101 to 102.5°F. Using a rectal thermometer is the most accurate way to check. Have you noticed any changes in your dog's behavior or appetite? It's always good to consult a vet if you're unsure. How can I support you further with your pet's health concerns?