Since I’ve been doing the dog thing so much, I think it’s only fair that I do the cat thing for a bit. Below you’ll find the “mental model” of a cat (click to make the picture big and legible). The cat’s mental model, as well as the concept of metal modeling, can be credited to Mental Models: Aligning design strategy with human behavior by incredibly smart Indi Young. There are a lot more images from the book on flickr. If any of this sparks your interest, Liz Danzico has a good review of the book.