Good topology

So, I wanted to explain good topology to my students. I created this face as an example. It has little over 2000 polygons and they are all quads.

The wireframe shows all the loops and stuff. The ears were though to connect to the head, without using tri's or creating too long poly's.

I'm quite happy with the result. It will do great as an example. Just for fun, I hope to create the body too. Maybe even rig and animate it all. (But looking at my previous projects, I'm not sure I will actually find the time to do this.)