My Ulysses got to 18lbs VERY quickly. I imagine if he had a lazy owner they may not have cared that he was gaining so much weight. Poor Mickey. He's got to feel better. I have never been overweight but people I know always say how much better they feel when they drop 10-15 lbs - I can only imagine it's the same for the kitties. If only they could talk.... A video of this would be fantastic :-)No I don't but I would imagine he just kept slowly getting bigger and bigger over his entire life. That's just a guess though.
I think he does feel a lot better. He moves a lot more easily now than when I first got him. He's always been playful but he used to just stay in one spot, frequently rolled over on his back. It was hard to get him to stand up and go after a toy. Now he'll walk all over the house going after a toy I'm dragging. He'll even run in short spurts. I need to make a video of the way the plays now.
My cats have pretty much ignored Mickey so far. He has shown a little interest in playing with them but since they don't reciprocate nothing has come of it. We'll see if that changes as he gets more active and harder for them to ignore.