I hardly ever see the caps, and that Republic of Texas and Mexican War relics are something I just never see. I am surprised you didn't run into any Cotton Mouths. Not unusual to encounter them in small creeks, and other water bodies around here, plus the usual assortments of Copperheads and Timber Rattler's. We are just so lucky here I guess. I hate them worse than ticks or chiggers. When I lived out east, we mostly worried about ticks and chiggers.