man cub

sterling normally crawls on his hands and knees while he plays with his cars. i noticed that he does not do this if the ground is rough. i can understand, gravel does not feel good on knees. so he goes hands and feet. this reminds of the the man cub from he jungle book, when he is walking with the elephants. don't you agree?

yes, we do call him man cub now. this mostly happened when he did his hand/feet crawl with only a diaper on.