I asked a groomer about this and she said: "I have to agree with this. Although I shave my guys every summer, Shami's coat hasn't grown back right since he was 5. Yoshi's coat grows back beautifully every year but he doesn't have the same coat as Shami. His coat is the flat laying type."
I have my groomer trim Max each spring, but not shave him down. What do all of you do?