第 1354 號，共 1 402 號

Rough-skinned newt

Taricha granulosa

可能致命不要碰不治療的話可能致命。如果有人碰了或吃了牠，要趕快求救。

皮膚裡有毒有毒（碰或吃會中毒），不是有毒液

The rough-skinned newt is a small, stocky amphibian from the Pacific Northwest of North America. Its skin gives off one of the strongest toxins of any newt, so it is a creature to admire from a distance and never handle. Its toxin is also linked to a famous fight between newts and garter snakes.1

有毒還是有毒液？有毒液的動物會用咬或螫把毒液注入身體。有毒的動物則是碰到或吃下去會有害。這種動物是有毒的（碰或吃會中毒）。

分布在

Pacific Northwest of North America, from Alaska south to Santa Cruz, California. Rare east of the Cascade Mountains.1

北美洲

首頁

Found in the Pacific Northwest, including a small isolated population in ponds north of Moscow, Idaho, which is thought to have been introduced by people.1

長度

11 cm 到 18 cm (4,3 in 到 7,1 in)1

最高速度

大約 0,5 km/h（0,31 mph）

在陸地上, 粗略估計

Rough-skinned newt 的照片 — Rough-skinned newt。照片：The High Fin Sperm Whale。 CC BY-SA 3.0, Wikimedia Commons.

怎麼認出牠

Stocky body with a rounded snout.1
Top ranges from light brown to olive or brownish-black.1
Underside, including the head, legs and tail, is orange to yellow.1
Skin is granular, but males are smooth-skinned during the breeding season.1
Adults are 11 to 18 cm long overall, including the tail.1

常被誤認為： The California newt (Taricha torosa) looks similar. The rough-skinned newt has smaller eyes, yellow irises, V-shaped tooth patterns and uniformly dark eyelids. During breeding season, males have large swollen vent lobes and cornified toe pads, which separate them from females.1

毒素力量

皮膚裡有毒

牠的皮膚有毒。碰、舔或吃牠都很危險。

牠的毒素有什麼作用？

This animal is poisonous rather than venomous, so it does not bite or sting. Its skin produces tetrodotoxin (TTX), a neurotoxin that attacks the nerves. It blocks the sodium channels that nerves need to send signals. This can cause paralysis and death by asphyxiation, which means the person cannot breathe.1

牠對人有多危險？

對人的危險: 非常危險如果沒有治療，牠可能會害死一個人。

The toxin is mainly dangerous if the newt is eaten. Some people have had skin irritation after handling the newt, especially if they touch their eyes without washing their hands first. In 1979, a 29-year-old man from Oregon died after eating one. Some newts make enough toxin to kill several adult humans.1

牠害怕時會做什麼？

It gives off an acrid smell that warns animals to stay away.1

如果有人碰了或吃了牠

如果有人碰了牠：把手徹底洗乾淨，不要碰眼睛或嘴巴。如果小孩或寵物舔了或吃了牠：打給毒物諮詢中心或打緊急電話。

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。
如果你碰了或吃了牠：不要揉眼睛或摸嘴巴，把手洗乾淨，並且就醫。

牠不是想來抓你。牠的毒只是為了不讓別的動物吃掉牠。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 6 塊玩具積木排成一排一樣長

Rough-skinned newt 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)

Rough-skinned newt 大約 0,5 km/h (0,31 mph)

一個正在走路的人 大約 5 km/h (3,1 mph)

值得知道

小知識

Some common garter snakes can eat rough-skinned newts and survive. They are the only known animals today able to do this.1

A garter snake tests a newt's toxin level by partly swallowing it, then either swallows it fully or lets it go.1

Newts can detect the chemical signature of a snake that has digested one of their kind, and they move away from it.1

The toxin is made by the newt's skin microbiome, meaning the bacteria living on its skin.1

The newt and the garter snake are an example of an evolutionary arms race. Each change in one species drives change in the other.1

The toxin also appears in pufferfish and other marine animals, which share the same nerve-blocking effect.1

給毒液專家

學名: Taricha granulosa
類群: 箭毒蛙、蟾蜍和蠑螈
家人: Salamandridae2
排序: Caudata
各大洲: 北美洲
寶寶: The eggs contain tetrodotoxin, which helps protect the offspring from predators such as the common garter snake.1
對人的危險: 4 / 5: 非常危險3