第 0536 号，共 1 402 张

Santa Catalina rattlesnake

Crotalus catalinensis

名字的由来： The name comes from Isla Santa Catalina, the only island where it lives.1

需要看医生很少致命，但被咬了要去看医生。

响尾蛇

咬伤吃：肉

对人的危险: 严重被咬了要去看医生。死亡非常罕见。

The Santa Catalina rattlesnake is a small, slender pit viper with a very unusual feature: it has no rattle. It lives only on Isla Santa Catalina, a small island in the Gulf of California off the coast of Baja California Sur, Mexico. It is critically endangered.1

生活在

Isla Santa Catalina in the Gulf of California, off Baja California Sur, Mexico1

北美洲

首页

It lives in Gulf Coast desert plants, mostly on the western side of the island, in dry washes called arroyos, plains, ravine bottoms, stream riverbeds and rocky hilltops. It shelters in rock crevices and dense vegetation.1

长度

73 cm (2.4 ft)1

最高速度

约 3.5 公里/小时（2.2 英里/小时）

在陆地上, 粗略估计

它吃什么？

Its diet is mostly mammals, especially the Santa Catalina deer mouse, with some lizards. It holds its prey in its jaws until the venom takes effect, rather than biting and releasing it.1

Santa Catalina rattlesnake的照片 — Santa Catalina rattlesnake。照片：Yinan Chen。 Public Domain, Wikimedia Commons.

怎样认出它

It has no rattle. The tail tip falls off with each shed instead of forming new segments.1
It is relatively slender and small, growing to a maximum of 73.1 cm.1
The most common colour form has a light cream base with reddish-brown blotches down the back and black and white banding around the tail.1
The other colour form is ash grey with darker grey blotches, and it still has tail banding.1
It is mostly active at night and is often seen out in the open rather than hiding.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 venomous, like all pit vipers. It holds its prey in its jaws until the venom takes effect, so the prey cannot escape before it succumbs.1

它对人有多危险？

对人的危险: 严重被咬了要去看医生。死亡非常罕见。

它害怕时会做什么？

Unlike most rattlesnakes, it does not tend to hide, and because it has no rattle it gives no audible warning.1

如果它咬人

让人保持安静不动，被咬的肢体与心脏保持同一高度，摘下戒指和紧身物品，尽快送医院。

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100 秒就能跑完 100 米（最快的人需要 9.6 秒）

Santa Catalina rattlesnake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)

Santa Catalina rattlesnake 约 3.5 公里/小时 (2.2 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 one of the few rattlesnakes that has lost its rattle. The tail tip falls off with each shed instead of forming a new segment.1

Although it is a rattlesnake, it is a swift and skilful climber, and individuals were most often found in low bush branches during the hottest month, July.1

Its main prey, the Santa Catalina deer mouse, lives only on this island, so the snake's food supply is also very limited.1

It does not hibernate, and the evidence suggests it is nocturnal even in winter.1

Its closest relative on the mainland is the red diamond rattlesnake, which eats a much wider range of prey, including frogs, birds and other snakes.1