My cat Calypso is an extraordinary cat. Everytime she hears me crumple a piece of paper runs to my side and waits, I make a great show of noise and crumpling and finally I throw it in the ratan waist basket by my desk. The next thing I hear is Calypso into the basket grabbing the crumpled paper between her teeth and race onto my lap to await me give her the command to drop it. She usually looks ridiculous like a creepy smile while she’s holding the crumpled paper. She can do this all day, she is tirelessly. I never knew when she started doing this but has been a ritual for 6 years. This form of excersise keeps her fit and it is an hysterical party playtime when we have company.