第 0581 号，共 1 402 张

Patagonia green racer

Philodryas patagoniensis

名字的由来： The name suggests Patagonia, but most of its range lies outside that region.1

只是会疼会疼，但不会对你造成严重伤害。

后沟牙蛇

咬伤吃：肉

对人的危险: 很疼可能真的很疼，但几乎从不严重。

The Patagonia green racer is a medium-sized snake with a venomous bite, though its fangs sit at the back of its mouth. It lives in open country across much of South America, from northern Argentina to northeastern Brazil. It is special because it hunts other snakes, including its own kind.1

生活在

Argentina, Bolivia, Brazil, Paraguay and Uruguay, in cis-Andean South America (east of the Andes)1

南美洲

首页

It lives in open habitats such as the Patagonian steppe, Cerrado, Chaco and Caatinga, and in open areas of the Atlantic forest. It is terrestrial, but it forages mostly in trees and is active during the day.1

长度

1.5 m (4.9 ft)1

最高速度

约 5.6 公里/小时（3.5 英里/小时）

在陆地上, 粗略估计

它吃什么？

It preys on snakes, including its own species. Juveniles feed on ectothermic (cold-blooded) animals, while adults feed on endothermic (warm-blooded) animals.1

Patagonia green racer的照片 — Patagonia green racer。照片：Guillermo Debandi。 CC BY 4.0, iNaturalist.

怎样认出它

Medium-sized, cylindrical and robust body with a moderately long tail1
Rounded snout and a medium-sized eye with a round pupil1
Smooth dorsal scales1
Brownish colour that helps it blend into its surroundings1
Active during the daytime1

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 produces toxic saliva from a gland called the Duvernoy's gland. The toxin is about 90% protein, mainly metalloproteinases (enzymes that break down tissue). Its effects are similar to those of Bothrops snakes, causing swelling, bleeding and tissue death. Its venom also contains neurotoxic (nerve-attacking) and myotoxic (muscle-damaging) components, which can cause neuromuscular block (signals from nerves to muscles are interrupted) and myonecrosis (muscle death).1

它对人有多危险？

对人的危险: 很疼可能真的很疼，但几乎从不严重。

The species has difficulty injecting venom because of its rear fangs.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 3 只家猫鼻子接尾巴一样长和 8 根香蕉首尾相接一样长64 秒就能跑完 100 米（最快的人需要 9.6 秒）

Patagonia green racer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？

一个在走路的人 约 5 公里/小时 (3.1 mph)

Patagonia green racer 约 5.6 公里/小时 (3.5 mph)

一个骑自行车的孩子 约 12 公里/小时 (7.5 mph)

值得了解

事实

It is one of the few snakes that hunts other snakes, including members of its own species.1

Its diet changes with age: juveniles eat cold-blooded prey, while adults eat warm-blooded prey.1

Despite its name, most of this snake's range lies outside Patagonia.1

Females are longer in body and heavier, while males have longer tails.1

Its birds of prey predators include the barn owl (Tyto furcata) and the seriema (Cariama cristata).1

谣言粉碎机

谣言： Its name means it lives in Patagonia.

真相： Most of its range is outside Patagonia. It is found across Argentina, Bolivia, Brazil, Paraguay and Uruguay.1

给毒液专家

学名: Philodryas patagoniensis
类别: 后沟牙蛇
家人: Colubridae2
排序: Squamata
大洲: 南美洲
宝宝: Reproduction is seasonal, with the vitellogenic (egg-yolk forming) season running from July to October.1
对人的危险: 2 / 5: 很疼3