Cave Doodles?

This evening, after dinner, we all went out to doodle on the driveway with chalk. Liam has become quite adept at doodling "dinosaurs". He drew a bunch of them here and there amongst our drawings of dinos, trains, flowers, and such. It struck me that many of his drawings look very much like Paleolithic cave drawings of large mammals. I have to say that I am quite impressed that Liam can draw a recognizable animal with a body, legs (often more than four), neck, tail, and a head. This seems pretty advanced for a 2 year old!