Cropping works well especially in 6x4 or 7x5 ratios - maybe an experiment or two would help you see what I am suggesting (not that I am right!) - post a few experiments here - members would love to help.
I've been back and forth looking at the first shot and the cropped version several times, deciding which I prefer. I do believe I like them both. The cropped version brings the focus more on the cat, and in the original I like the overall scene.