Very cute, the sprites match the background pretty well.
I think the gameplay element is quite interesting and can be expanded upon.
Considering how simplistic the objectives and obstacles are, you can consider using a RNG to randomise the levels.
Also, the barking gameplay element feels very sluggish initially and can get stale fast. If you add power ups or a skill tree or upgrades would make the game feel more engaging.
Also more terrain and enemy types would also make it quite interesting!
Just suggestions, maybe you wanna stick with just a more realistic wolf and sheep theming