“…The final case report is of acute onset collapse and hypoventilation requiring mechanical ventilation following lowland copperhead ( Austrelaps superbus ) envenomation in a dog . The authors review the mechanism of toxicity in the snake, which is highly venomous, and suggest that envenomation with these snakes has been rarely reported in either the veterinary or medical literature, because they are much less aggressive than the closely related Notechis species.…”