If a dog has a fever, it is best to go to the pet hospital for antipyretic injections. It is not easy to control the dosage of oral antipyretics and may cause drug poisoning in dogs, so it is not recommended to give medicines. Dog fever is generally caused by acute gastroenteritis, respiratory infection, cold, viral infection, pneumonia and other reasons. The cause needs to be checked and targeted treatment will be carried out, so that the effect will be better.