[RustysMom]

Rusty loves to play Mouse Under the Covers... after we eat our evening meal, he will sit and whine for me to follow him, and he goes and jumps on the bed. I stick my hand under the covers and move it around like a mouse. Rusty leaps, jumps, pounces on the mouse and play bites it, while I move the mouse around under the covers. He play growls or digs etc, just like my hand was a real mouse.

I think he knows it is only my hand but you never know.