he already shows insane bones. You can see in the video and judge thinks by the way he moves. He's THICK and that's why he gets tired quickly, kind of like a heavyweight boxer.
I always looked out on websites and You Tube for thick solid looking DDR pups, and very very rarely would I come across those that had the MASS factor.
Bero is an excellent example of a DDR type pup.
Just like to mention a pup from Stasi Kennels which has been posted on YT..
He was an awesome looking pup also..