This is video from the first squirrel that I ever shot out to Max and the subsequent first time he ever started treeing. This showcases how much of a dog's hunting and treeing ability comes down to genetics and selective breeding. I did nothing to encourage him to start treeing, he just naturally treeing. I also started Max as a young puppy during the Spring season here in KY.

Many people, probably smarter than I, suggest not starting your young pup during the spring because it can lead to soft treeing and a pup having a tough time tracking the squirrel through the thick canopy and starting to lose interest in squirrels. For the most part, I agree with this, but in Max's cases and in cases with a high prey drive puppy there is a lot of benefit to starting a puppy early, even during the hot, tick infested spring season that many states allow.