The actual art looks good. The animations in which just the independent parts of the sprites move.
I like the concept of the gameplay, mainly because I like single screen boss-fights, with multiple phases. There is one big flaw, the dog controls a bit sluggish, with the jump especially. I can't really pin-point why, it might have something to do with the non-smooth dog animation
The sound and music are nothing special.
Overall competently made, but most likely not for me :>