My partner took a muley this past year that had a very large deformed rack in the velvet and had no nuts. We also call them cactus bucks.I asked the warden about it and he told me that when the deer was a fawn the mother may have licked them off while cleaning it or another dominant buck bit them off, something about wanting to remain top dog. The buck never gets the urge to breed (no testosterone) therefore he never rubs off the velvet from his antlers and does not shed them.