Very fun game. I like the idea of staying out longer and getting more cheese by risking getting hit once the cat gets faster and potentially losing everything. The only thing I would change, if you have time, is redrawing the furniture since it looks like it was made in fewer pixels, and it is stretched, and it doesn't match the outline of the rat and other things, making it a little less cohesive.
Overall, a fun little game. I like the different milestones you hit as you get more cheese. I was able to get some furniture, but my wife didn't make it back yet! :D