Alcatrazes lancehead
The Alcatrazes lancehead is a small pit viper, a venomous snake that senses heat with pits on its face. It lives only on Ilha Alcatrazes, a small island off the coast of southeastern Brazil. It is special because its island home has shaped it over thousands of years into a snake that stays small.1

怎样认出它
- A small pit viper, reaching a maximum length of about 46 cm in males and 50 cm in females.1
- Relatively large eyes for its body size.1
- Found only on the Alcatrazes Islands, so it is not expected anywhere else in Brazil.1
常被误认为: Its island population was once connected to the mainland, where the common Bothrops still lives. Its small size and large eyes set it apart from these larger relatives.1
毒液之力
它咬的时候,毒液通过毒牙或牙齿出来。
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。
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
它有多大?
它有多长?
和 3 根香蕉首尾相接一样长
和 16 块玩具积木排成一排一样长
110 秒就能跑完 100 米(最快的人需要 9.6 秒)Alcatrazes lancehead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?
事实
Over time, isolated snakes shrank in size, a process known as allopatric speciation, because their food supply was less nutritious.1
About 15,000 years ago, rising seas cut the island off from the mainland, and its snakes became isolated.1
The island was once used as a naval target practice area.1
Its small size and relatively large eyes are considered juvenile (paedomorphic) features.1
事实的来源
- Bothrops alcatraz (Wikipedia (CC BY-SA 4.0))
- Bothrops alcatraz (iNaturalist): 名称和分类。
- Venom Wiki: 危险等级、典型大小和速度估计都是我们自己给出的。看看我们是怎么算的: 我们如何评定危险.
本页的每个事实都有一个编号,指向它的来源。如果我们写错了,抱歉,我们是动物爱好者,不是科学期刊。请写信到 [email protected] 告诉我们,我们会改正。
咬伤


如果它咬人