I think it goes different with each dog. Like mike he runs mostly cataoula dogs and they seem to take a little longer to get going then some cur dogs however, once they get going they learn alot faster. Atleast from my experience. And i think it all has to do with the maturaty of any given dog. I have had a dog as young as 4 months in the woods. Then again i have most of them wait until they are over 1 year old brfore they even see a hog. It all has to do with the maturity of the dog. I have a brindle cur female that is 2 yrs and she still acts like a 3 month old puppy, but she is going to be a good dog once she gets going.