As the narrator notes, this incredible growth is the result of "a perfect storm of genetics, nutrition and a stress-free lifestyle." Noticeably absent from the antler-growth equation formula is age. Most wild bucks need at least five antler growth cycles before they realize their full potential, and some may not "max out" unless they reach 7-1/2 years of age. For any buck--even a domestic critter--to pour on this much horn in only two years is nothing short of amazing to me. Of course Sudden Impact is fed well, has no worries, and represents a rare kismet of breeding strategy. But come on…406" as a two-year old? Sometimes we get a glimpse into the potential of a species, and I find it fascinating, whether it's a child prodigy, a lightning-fast race horse, or a whitetail with ginormous antlers.