Deinagkistrodon acutus (Gunther, 1888)
It is a mid-sized snake, generally with a length of 73-126 cm, and the largest one can reach 150 cm. It is fat with a triangular head and upward mouth, marked by many black triangles on both sides. It dwells in the bottom of the mountainous forests, usually coiled. It is in a sit-and-wait foraging mode, difficult to be discovered because its patterns match up perfectly with fallen leaves. It is fiercely offensive and poisonous, able to kill humans quickly. It is more active at night and morning. The ovulation period is usually between June and August. There are 11-35 eggs laid per nest, taking about 3-4 weeks to hatch. The baby snake is around 21 cm long. The females exhibit egg attendance behavior.
It is distributed all over the low- to mid-altitude areas of Taiwan, as well as southwest and southeast regions of China. They dwell on the ground in the mountains or woods, and in stone hills or lower slopes that provide good shelter. The indigenous Rukai people of Taiwan worship the hundred-pace viper and blend its pattern into totem, carvings and clothes as exquisite craftwork.