Mine too!!! My male cat, Jack, discovered fetching about a week after we brought him home. He could do it forever. The first time he brought his toy back after I threw it, I thought it was just a fluke. But I did it over and over and over again, and he brought it back every time. I always have to show off for visitors -- they never believe me!
Frosty likes to push a little ball back at me ..so we keep on playing like this with the ball going back and forth for some time. I find it amusing and also intriguing. It is quiete a view to see his eyes on the ball and him concentrating on placing his paw in such a way so he can push back.
I would love for him to play fetch also.