The normal body temperature for dogs is between 101 and 102.5 F, compared to 97.6 to 99.6 F for humans. This means your dog may feel feverish to you even when his temperature is completely normal.The word “fever” is typically used to describe elevated body temperature caused by infection or inflammation. temperature of more than 103 F is considered a dog fever. When dogs have high temperatures that are the result of hot external temperatures or excessive exercise in humid conditions, the condition is referred to as hyperthermia or heat stroke. When temperatures reach 106 F, serious and fatal complications can occur.