This was a nice little experience, you did a lot with such limited options with Pico-8.
There were many more ways to depend the sheep than I originally thought there was going to be so great job on keeping a good amount of variety to keep it things from becoming stale.
My biggest gripe is firecrackers being the same button that is used to sheer the sheep, multiple times I threw a firecracker on accident cause I either wasnt close enough to the sheep or the sheep would walk away from me while trying to sheer it, so a different button for that definitely would've been nice.
This is a smaller problem but the font is kinda hard to read but I know that's more of the limitations of Pico-8 but maybe if you use it again try making the words larger in some way?
I rather enjoyed this project, and to see you only spent 30 hours making it is impressive!