The Spanish Origami Society (ASOCIACIÓN ESPAÑOLA DE PAPIROFLEXIA) feature a number of folders with unique approaches to model design, this is a cute rat:

A fairly compact model, suggestive of features rather than folding every detail.

I think it captures the spirit of a rat quite well, well a nice playful one rather than a plague-infested nasty.

Nice ears, face and tail, and a plump little 3d body combine to make a neat model for today.