第 0604 號，共 1 402 號

Night snake

Hypsiglena torquata

無害對人無害。不用擔心。

咬吃：肉

The night snake is a small snake that is most active at dusk and at night. It lives in western Mexico, and it is rarely seen in the Okanagan Valley of Canada. It has rear fangs and mild venom, but it is not dangerous to people.1

分布在

Western Mexico; rare sightings in the Okanagan Valley, British Columbia, Canada1

北美洲

首頁

Night snakes are often seen at night crossing roads. During the day they hide under rocks, boards, dead branches and other surface litter.1

長度

30 cm 到 66 cm (1 ft 到 2,2 ft)1

最高速度

大約 4,5 km/h（2,8 mph）

在陸地上, 粗略估計

牠吃什麼？

Its main prey is lizards, especially side-blotched lizards and their eggs. It also eats juvenile rattlesnakes, blind snakes, salamanders, frogs and large insects.1

Night snake 的照片 — Night snake。照片：Francisco Farriols Sarabia。 CC BY 4.0, iNaturalist.

怎麼認出牠

Pale grey, light brown or beige, with dark grey or brown blotches on the back and sides1
A pair of dark brown blotches on the neck1
A black or dark brown bar behind each eye1
Vertical pupils and a flat, triangular head1
A white or yellowish belly1

毒液力量

咬

咬的時候，毒液會從毒牙或牙齒出來。

牠的毒液有什麼作用？

The night snake is slightly venomous. It uses its venom to subdue its prey, not to harm people.1

牠對人有多危險？

對人的危險: 輕微跟蜜蜂螫差不多或更輕微。對人基本上無害。

The night snake poses no threat to humans and is not dangerous to people.1

牠害怕時會做什麼？

If threatened, it coils up and thrusts its coils at the threat while flattening its head into a triangular defensive shape.1

如果牠咬人

清洗咬傷處，讓傷者保持冷靜，並且就醫。有些種類（例如非洲樹蛇）可能在幾個小時後才致命。

一定要先打緊急電話（112、000、911）。這是一般急救指引，不是醫療建議。急救基本知識

注意安全

絕對不要碰、抓或捉弄野生動物，就算是很小的動物，就算牠看起來在睡覺或已經死了也一樣。
給牠空間。如果遇到了，保持冷靜，慢慢往後退，讓牠自己離開。
如果被牠咬了：保持冷靜，保持不動，打緊急電話（112、000、911）或趕快去醫院。記住牠的樣子，有照片會很有幫助。

牠不是想來抓你。牠用毒液來捕捉食物或保護自己，而且牠更想躲起來。更多安全知識

在世界上的哪裡？

非洲亞洲歐洲北美洲南美洲澳洲與大洋洲

牠有多大？

牠有多長？

跟 4 根香蕉頭尾相接一樣長可以在 80 秒內跑完 100 公尺（最快的人類需要 9.6 秒）

Night snake 跟「你」比起來有多大？

只是在你的瀏覽器裡做算術。什麼都不會儲存，也不會傳送到任何地方。

牠有多快？

一隻陸龜 大約 0,3 km/h (0,19 mph)

Night snake 大約 4,5 km/h (2,8 mph)

一個正在走路的人 大約 5 km/h (3,1 mph)

值得知道

小知識

In British Columbia, only about 20 sightings have been recorded since 1980, so it is very rare there.1

Night snakes hibernate during winter and can aestivate during some summer periods.1

They are both crepuscular, meaning most active at dawn and dusk, and nocturnal.1

給毒液專家

學名: Hypsiglena torquata
類群: 後毒牙蛇
家人: Colubridae2
排序: Squamata
各大洲: 北美洲
寶寶: Females lay a clutch of 2 to 9 eggs between April and August. The eggs hatch in 7 to 8 weeks, usually in late summer.1
對人的危險: 1 / 5: 輕微3