Not all "stag" bucks are nontypical. That are different circumstances that cause the condition (velvet antlers, oftentimes never shed), sometimes an injury and sometimes not. What ever the cause, it (the retention of velvet) is generally due to a testicular abnormality. The "stags" have enough testoterone to produce antlers, but not enough to shed the velvet. I took a buck this year that was a perfect typical and in the velvet in the beginning of October. His testicals had not decended. My guess is that it was a birth defect.