i have been speaking to a few good lads about this recently and i have come to the conclusion that a dog left untill adulthood will be a better prospect in the long run ... yes we have all had game pups taht have wanted to enter and have faired ok ... but what we have to remember is that they are PUPS and allthough they want to enter and they look physicaly capable they wont be mentally capable .... i honestly believe taht leaving a dog untill its 18 months to two years of age before entering will give you a much better worker in the years to come .......................