I think I can safely say that Cooper and Austin know their names and respond right away but Leo is pretty stubborn and runs when his name is called. Today I separated him from the other two and we played for awhile; everytime I called his name he came to me but I also paired it with one of his favorite treats. This evening they all behaved very naughty. Boys will be boys I guess because they did quite a bit of rough housing. I had to use Cesar Milan's "shhhhst" and a three finger (like a jaw bite) on their shoulder to get them to calm down. I am going to post some pics of their naughty selves in a bit. Maybe a video too.