My cat Gizmo is a 1 year and 7 months old. I came home today and found him under the bed shaking badly. So I fished him out and sat on the couch with him. He was doing fine and had finally stopped shaking. He was stepping off my lap when he freaked out and ran across the room hitting everything on the way. When I found him again he was shaking and panting heavily. What happened to him?