A dog that foams and convulses may be due to poisoning. If the dog has just eaten poison, the owner can try to use dilute hydrogen peroxide or soapy water to induce vomiting in the dog. It is also possible that the dog has neurological diseases, such as epilepsy, hepatic encephalopathy or abnormal nerve discharges.

It is also possible that the dog has hypocalcemia, and may also have symptoms of convulsions and foaming. It is recommended to supplement the dog with calcium ions.