I had a very fun time with this game, mixing and matching creatures. And every time I thought I'd made it to the end, there was another level to delight me even more.
Lack of audio has already been mentioned by others. Most of my issues with the game are simple QoL fixes, such as changing the E key to take a part into simply having it be space or W, or moving kangaroo with A/D makes it jump like it would when you press space.
While I was playing, I was imagining even more forms for the chicken, maybe leg and mouth parts that give even more puzzle options. But what you have for this jam was excellent and just he right amount of length!