Quite well presented, nice graphics, cutesy music, and you've mentioned most of the problems already so no point going over those (my particular bugbear was the collision detection trying to move doggie).
No real sense of urgency, even on timed levels - maybe have a 'ticking' sound when you're running out of time. One level I was dreamily clicking away when suddenly I'd lost.
Also on one of the wolf levels, the wolf stole a sheep and took it off the edge of the screen (I didn't know you could bark at this point) and meant I could never complete the level. Also I barked at a tree and a bonus came out, but due to the position of the fencing I couldn't collect the bonus.
I think perhaps due to the scale of the screen you're limiting yourself with the puzzles and their complexity. The scale at the moment just makes it feel like the flash games I play at work in my lunchbreak. My advice would be to have larger maps (for example, scrollable).
No real sense of urgency, even on timed levels - maybe have a 'ticking' sound when you're running out of time. One level I was dreamily clicking away when suddenly I'd lost.
Also on one of the wolf levels, the wolf stole a sheep and took it off the edge of the screen (I didn't know you could bark at this point) and meant I could never complete the level. Also I barked at a tree and a bonus came out, but due to the position of the fencing I couldn't collect the bonus.
I think perhaps due to the scale of the screen you're limiting yourself with the puzzles and their complexity. The scale at the moment just makes it feel like the flash games I play at work in my lunchbreak. My advice would be to have larger maps (for example, scrollable).