Such an unique concept. I like it a lot.
At first, I was confused of what to do in the game. I notices that my dung grows in size, but it took me while to find out that it only grows on the dark mud near the rocks. Also with the experience from first boss, I kinda expected that bug running on the top of the ball is indicator I am ready to smash into an opponent. But for some reason it was not the case for ladybug boss.
It was oddly satisfying just to run around and building up my dung ball.
From the visual point of view, I liked the savana aesthetics. It also goes pretty well with the music choice.
Nice job!