Help explain from Shaoxing villagers that a kind of snake in the countryside is called broken dog in our local dialect. What's the name of Mandarin?

Agkistrodon halys, also known as horizontal snake, local snake, shit park, gray chain whip, rotten belly snake, seven-inch son, hemp seven-inch and so on. The head is triangular, with buccal fossa, obvious snout scale, wide nose scale, tapering side edge and obvious back scale, with a total length of about 60-70 cm. The back is grayish brown, with dark splashes on the back of the head, thin white eyebrows with black edges on the sideburns, and big stripes on the back of the trunk. Generally, there are two rows of dark brown circular spots, which are staggered left and right, and some have horizontal spots with the same depth. Or there are scattered irregular spots, a row of brown spots on the side of the body, gray or grayish brown on the abdomen, and black spots.

Agkistrodon halys is widely distributed, which can be seen everywhere in the water network area along the southeast coast of China, the Northeast Plain, the Loess Plateau, the Qinling Mountains and the grasslands in Xinjiang and Inner Mongolia. Plains, hills, mountains and other environments can live. It often lives in graves, grasslands, rock piles and fields, and it is like shit. It belongs to the northern Agkistrodon halys, with strong cold tolerance. They eat frogs, birds and mice, as well as fish, snakes and lizards. Viviparous young snakes feed on arthropods such as centipedes, and their venom is mixed.

This poisonous snake is the most widely distributed species and subspecies in China. Except Hainan Island and Taiwan Province Island, it reaches Guangdong and Guangxi in the south, Heilongjiang in the north and Xinjiang in the west. It eats all kinds of food. Besides mice and frogs, birds, some insects and even fish are its food.