The average 2-3 year old. Got this from an old book my mother has, the illustrator is unknown, but the book (which I am sure if out of print now, was called Parents Magazine Baby Care Book, published in 63' written by Elenor S. Duncan and pediatrician Dorothy V. Whipple. I thought the illustrations were adorable. As my baby approaches 2 a lot of these qualities come to light. I posted the average one year old several months back, but now that Ben is approaching two, as many of my friends children as well, I thought this might be fun to see. You can double click the image to see it larger.