This game is hard! At the end of Day 2, half of my sheep were gone! I feel this sheepdog is going to be one very unhappy about the shepherd. At least fence properly! Game wise though, it was well done, and even looks pretty cute :)
Criticism wise, I feel the night lasts too long.
For me, the issue weren't the wolves, but the sheep escaping with their ever increasing speed! Day 4, I couldn't even catch up with a single sheep - while I always had them in the barn before the wolves even became an issue the days before (making the night a waiting game). They only ever caught one actively. The others ran off XD
I feel the wolves would need additional difficulty/danger, while the sheep could maybe stay in a bit easier. You'd still end up with the "uncontrollable" theme, but it'd have more of a curve and night would feel more dangerous, rather than DAY being the main danger, and night being fine because the sheep were barked into the safe barn.