Cute little game. You did a decent job with the level progression. Each level felt reasonably harder than the previous level. Once I figured out the rhythm of a level, I didn’t have issues completing it.
Having the first 5 levels be mouse only, and then needing to use only keyboard for level 6 was a bit shift. I could understand using D for dash, but it felt a little out of place at first. Giving the option to use something like middle mouse button as well as D for dash, and/or the option to use something like space as well as the left mouse button would have helped the dash feel more tied in with the rest of the gameplay.
Using a bucket in different ways to help the cat was fun. After using it to cover spikes in a couple different ways, using it as a more standard bucket (picking up water and pouring it out) made me smile. It would have been nice if there were a few more ways you used the bucket (such as made having the bucket push the cat faster instead of just the cat dashing) though understand not wanting to add too many features.