Just a cautionary note...since there is a cat in the house with a hamster, make absolutely sure that the ball is secure. I crazy glue the center seam around the ball so it can't pop apart, which has happened to me a few times. Then when hammy goes in the ball, put a small bit of tape on either side of the circular door so the door doesn't wiggle open when hammy runs in it. I've had more balls open up than I can remember. Since I started using the tape I haven't had an escape. It will keep the ham safe when the cat is around. Although Pikachu scared the cat while in the ball, if he were out of the ball it would be a good bet that instinct would take over and the cat would get him. Prevention is the best way to go.
