Our dog had a seizure

My cocker had a seizure when he was about 14, same thing happened to him, I called the Emergency Vet and he said to let it pass and there wasnt much they could do. Afterwards he was breathing heavily and then by morning he seemed fine, But quickly went downhill! He only lasted less than a year after that. He began by not being able to walk very well and then couldnt walk at all. I left for work 1 day and just knew when I can home that night he was gonna be gone. Sure enough he was.....