I have one that will be 2 years old this spring. I got him as a puppy and have been training and molding him to hunt sheds since day 1. Last spring he found 1 for every 10 I found. He knows what to do and he enjoys it, but he still has a lot of puppy in him so he spends a lot of time looking for rabbits, deer, eating cow and deer poop, swimming, etc. I think he will grow out of it and be an exceptional shed hunter in a year or two.