Dogs mouth trembling is what happened Dogs mouth up and down trembling

The dog’s mouth is trembling is what happened 1, the dog in a very cold situation, it will shiver all over, mouth trembling. 2, the dog distemper late will shiver, this time the dog has been very serious illness. The actual fact is that if the dog has had distemper before, the shivering may become an after-effect. 3, the dog has eaten toxic substances poisoned, appearing neurological symptoms. The dog mouth trembling how to find the dog mouth unexplained trembling, it is recommended to cover the dog with a blanket to keep warm, and then recall whether the dog ate something that can not eat, send the dog to the hospital for treatment.