I have one corn that isn't fat but is uncoordinated as anything! With my bigger beasties I dangle the mouse near them and swing it, all of them snatch it and coil on the first try, with him I have to hold it millimeters from his nose and even then he misses sometimes! He loves the coiling of it, so I continue to let him play the reindeer games. Maybe I will rename him "Rudolph".