When a dog has convulsions, the dog's body temperature should first be measured. General infectious diseases, such as canine distemper and parvovirus, may cause convulsive neurosis, and such diseases are usually accompanied by high fever, so body temperature is an important indicator, but not absolute. Secondly, the possibility of dog poisoning should be ruled out, especially organophosphorus poisoning is highly suspected. At the same time, if the dog is an elderly dog, the possibility of epilepsy must be suspected.