Printing the Models
I am more of an engineer than an artist, so I sourced the basic owl and squirrel models from Autodesk's 123Dapp website. The original artist's page for the owl can be found here. And the squirrel's artist can be found here.
I modified the models a bit to fit the electronics inside. The owl was too tall for my printer to handle so I separated it into two parts and used printed pegs to align them. This also aids in assembly later on and isn't too noticeable. I used Autodesk's free, online program, Tinkercad, to create the models.
You should start the printer now, the models take a while to print!