I did not see a section for suggestions, only error reports so I was unsure where to post this.

Let's be real I would love to see animals in the next update but with buggy zombies running through walls faulty hit detection and enemies despawning immidiately after death. Focusing on producing animals in the game will result in the same pattern with animals assuming your using similar code for them. You should fix the zombies and collision dection before adding more faulty material to the game. In my opinion this will make adding future content much smoother.