Deinagkistrodon acutus

Sharp-nosed pit vipers are heavy-bodied venomous snakes found in southeastern China, Taiwan and northern Vietnam. They favor moist, shaded foothill and mountain forests, particularly rocky vegetation near valley streams, but may enter agricultural areas and buildings while searching for rodents. Their upturned snouts, strongly keeled scales and paired dark triangular markings create a distinctive appearance. Heat-sensitive facial pits assist in detecting warm-blooded prey. (Animal Diversity Web)

These primarily nocturnal or crepuscular vipers are ambush predators that immobilize birds, rodents, lizards and amphibians with venom. Females lay comparatively large clutches and coil around their eggs during incubation, providing protection until the independent hatchlings emerge. Individuals are generally sedentary and may spend winter inside sheltered mammal burrows. When alarmed, they can strike rapidly and should never be approached or handled outside professional conditions. (Animal Diversity Web)