Generally, dogs will have difficulty breathing and convulsions after being poisoned. At the same time, they may have symptoms such as vomiting, diarrhea, and pupil dilation. Most of them are caused by organophosphorus or coumarin poisoning. Neurological symptoms can also occur when encephalitis occurs, and severe infections can also affect breathing, which is also the cause of dyspnea.

It may be that the dog is suffering from canine distemper, causing convulsions and difficulty breathing. It is recommended to take it to the hospital for testing. It may be a neurological disease such as epilepsy, which may be accompanied by symptoms such as foaming at the mouth and convulsions.