Rodneys first Lego creation

Rodney was in the shower with me this morning and he has built two identical horses! The only thing we have made out of legos are guns. A simple two pieces. Today out of nowhere he created two horses and when I got out of the shower I asked him where his horse was so I could take a picture. It had fallen apart so he created more on command!! How did he learn to make things out of legos?? I can't even make things out of legos! Smart kid.