Heidi,
I had good results running my fat ferret on a sort of indoor track. I hung
a colorful toy on a leash and swung it in a slow circle about 7 feet in
diameter. Ferris ran after it. We did these training sessions about five
minutes at a time once or twice a day for a few weeks. He slimmed down
quickly and hasn't chubbed out again since.
Good luck!
Vesna
[Posted in FML issue 2788]