I hate to say this
But I love guessing games.
It would a lot of hard work, but if you somehow made an animal guessing game then you'd pretty much be the master of the universe in my opinion. But I know how much time that would involve.
In the meantime, this was a fun game with no real flaws.
I might say adding a few more things to make it feel more like a game (like winning and losing, and fun ADD buttons)...but I honestly don't feel any of those things are truly necessary.