I have a spatula that I use to pry prints off my print bed. My daughter likes to steal said spatula, and use it to scoop poop out of her chinchilla's cage. That's pretty gross, so I looked for a model here on thingiverse to print out real quick.
I managed to find one, but for the life of me, I couldn't get the file to open in any of the tools I use, so I said "screw it", and designed my own.
It actually turned out alright. My daugher likes it, and my spatula won't have animal poop on it anymore (probably).
Depends on how heavy your animal poop is... Go with 100% for lead-pellet consistency, or 30% for puffed-rice consistency