| The neck muscling is directly related to the shoulder placement. A ewe neck is due to shoulder placement not exercise. Most Rottweilers have a fairly heavy neck regardless. I am quite skeptical that a weighted collar would have an effect on what you desire. Stamina is best built up by extending exercise. Road work is one of the best things for building stamina. Most field work calls for bursts of energy whereas road work gradually builds up stamina for longer expansions of energy. |