第 0602 号，共 1 402 张

Desert night snake

Hypsiglena chlorophaea

无害对人无害。不用担心。

咬伤吃：肉

The desert nightsnake is a small, slender snake that hunts at night and spends the day hidden. It lives in dry parts of western North America, from the southwestern United States into northwestern Mexico. It is mildly venomous, but it poses no danger to people.1

生活在

Western and southwestern United States, northwestern Mexico, and a small area of southern British Columbia, Canada1

北美洲

首页

It lives in dry places such as desert scrub, chaparral, grasslands, oak woodlands and rocky canyons. It spends daylight hours hiding in rock crevices, on talus slopes, under surface debris or in abandoned mammal burrows.1

长度

30 cm到66 cm (1 ft到2.2 ft)1

最高速度

约 4.5 公里/小时（2.8 英里/小时）

在陆地上, 粗略估计

它吃什么？

It is an ambush predator that waits for prey and uses its mild venom to subdue it. It mainly eats small lizards such as skinks and lizard eggs, and will also take small snakes, frogs, salamanders and insects.1

Desert night snake的照片 — Desert night snake。照片：iNaturalist user: nmoorhatch。 CC BY 4.0, Wikimedia Commons.

怎样认出它

Small and slender, usually 30 to 66 cm long in total.1
Base colour is beige, yellowish or grey, with dark grey-brown blotches that usually form offset pairs down the back.1
Three long dark blotches on the neck and one behind each eye.1
Triangular head with vertical pupils.1
Smooth scales on the back and no rattle at the tail.1

常被误认为： It is often mistaken for a juvenile rattlesnake because of its triangular head, vertical pupils and blotched pattern. Unlike a rattlesnake, it has no rattle and its back scales are smooth.1

毒液之力

咬伤

它咬的时候，毒液通过毒牙或牙齿出来。

它的毒液会造成什么？

It is mildly venomous and uses its venom to subdue prey. It has rear fangs, which are grooved teeth at the back of the upper jaw.1

它对人有多危险？

对人的危险: 轻微像被蜜蜂蜇一下或更轻。对人基本无害。

It is mildly venomous and poses no danger to humans.1

如果它咬人

清洗咬伤处，让人保持冷静并就医。有些种类（比如非洲树蛇）可能几小时后才致命。

一定先拨打你的急救电话（112、000、911）。这里是一般急救指导，不是医疗建议。急救基础

注意安全

永远不要摸、抓或逗弄野生动物，即使是很小的，即使它看起来在睡觉或已经死了。
给它留出空间。如果遇到它，保持冷静，慢慢后退，让它走自己的路。
如果被它咬了：保持冷静，保持不动，拨打你的急救电话（112、000、911）或尽快去医院。记住它长什么样，拍张照片会有帮助。

它不是冲着你来的。它用毒液捕猎或保护自己，而且它更愿意躲起来。更多安全知识

在世界哪里？

非洲亚洲欧洲北美洲南美洲澳大利亚和大洋洲

它有多大？

它有多长？

和 4 根香蕉首尾相接一样长80 秒就能跑完 100 米（最快的人需要 9.6 秒）

Desert night snake和你比起来有多大？

只是在你的浏览器里算一算。什么都不会被保存或发送到任何地方。

它有多快？

一只陆龟 约 0.3 公里/小时 (0.19 mph)

Desert night snake 约 4.5 公里/小时 (2.8 mph)

一个在走路的人 约 5 公里/小时 (3.1 mph)

值得了解

事实

It is a rear-fanged snake, with enlarged grooved teeth at the back of the upper jaw that help it subdue prey.1

In Canada, it is federally listed as Endangered, because its small population is threatened by habitat loss.1

Females are generally longer and heavier than males.1

It is mainly active at night and at dusk, which is why it has the name nightsnake.1

谣言粉碎机

谣言： It is a juvenile rattlesnake.

真相： It is a separate species. It has no rattle and its back scales are smooth.1

给毒液专家

学名: Hypsiglena chlorophaea
类别: 后沟牙蛇
家人: Colubridae2
排序: Squamata
大洲: 北美洲
宝宝: It lays eggs. Females lay a single clutch of 2 to 9 eggs, usually around 4, between April and July, hidden in rock crevices or abandoned burrows. The eggs hatch in late summer, and the hatchlings are about 17 cm long.1
它在野外过得怎么样: Least Concern globally (IUCN); Endangered in Canada (COSEWIC)1
对人的危险: 1 / 5: 轻微3