"The cornered cat can't bite the rats" aww man!
Definitely think this is a neat twist and fits the theme quite well! I will admit that the controls feel a little off (maybe it would have been better to loosen them up a bit such as after a jump?) and hinder the experience somewhat but a good 'ol score attack game is always a good time and this is no exception!
When I played I felt that excitement and tension from the dynamic of the mice and cat and wanted to keep at it to do better! Well done!