Native snails on Hokkaido Island climb trees to avoid native predators, but this tactic can’t help them escape predatory invasive rats. In a small region of Hokkaido Island, Japan, the slow-moving, athletically brilliant Sapporo Mai-Mai Snail (Euhadra brandtii sapporo) ascends the high canopy, escaping ground-dwelling predators. When winter gives way to spring, snails transition from […]