And to lend credence to the other end of the statement... We all have seen those 40 - 45 pound mouse-faced labs that bounce off the walls of the crate and kennel acting as if high one some super accelerated drug.
Another thread is talking about the video of a long ago field trial... and one mentioned how surprised she was at the number of goldens! Yes goldens were once big players in the sport! Unfortunately they have lost a lot of ground... Is this to poor breeding on the part of the golden group or better breeding on the part of the lab group? Good campfire discussion.