Rough-skinned newt
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

Co renconuscher el
- 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
Savens confundì cun: 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
Forza tossica
Sia pel è tossica. Igl è privlus d'al tutgar, d'al litgar u d'al mangiar.
Tge fa sia substanza tossica?
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
Quant privlus è el per umans?
Privel per umans: Fitg privlusEl po mazzar ina persuna che na survegn nagin tractament.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
Tge fa el, cura ch'el ha tema?
It gives off an acrid smell that warns animals to stay away.1
Sch'insatgi l'ha tutgà u mangià
- Sch'insatgi ha tutgà in tal animal: lava bain ils mauns e na tutga betg ils egls u la bucca. Sch'in uffant u in animal da chasa ha litgà u mangià in tal animal: clama il center toxicologic u tes numer d'urgenza.
Clama adina l'emprim tes numer d'urgenza (112, 000, 911). Quai è in cussegl general d'emprim agid, betg in cussegl medicinal. Basa da l'emprim agid
Resta en segirezza
- Na tutga, na piglia e na tizza mai in animal selvadi, gnanc in pitschen, ed era sch'el para da durmir u d'esser mort.
- Dà spazi a l'animal. Sche ti scuntras in, resta calm, va plaun enavos e lascha ir el per sia via.
- Sche ti l'has tutgà u mangià: na sfruscha betg ils egls u la bucca, lava ils mauns e tschertga agid medicinal.
El n'ha betg quai sin tai. Ses tissi è mo là, per che nagin na al mangia. Dapli davart la segirezza
Quant grond è el?
Quant lung è el?
uschè lung sco 6 bluccs da construcziun in suenter l'auterQuant grond è Rough-skinned newt cumpareglià cun TAI?
Mo matematica en tes navigatur. Nagut na vegn memorisà u tramess.
Quant svelt è el?
Fatgs
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
Per experts da tissi
Da nua che vegnan ils fatgs
- Rough-skinned newt (Wikipedia (CC BY-SA 4.0))
- Taricha granulosa (iNaturalist): nums e classificaziun.
- Venom Wiki: il stgalim da privel, la grondezza tipica e la stima da la sveltezza èn noss agens. Guarda co che nus als calculain: Co che nus valitain il privel.
Mintga fatg sin questa pagina ha in numer che renvia a sia funtauna. Sche nus avain fatg in sbagl, perstgisa, nus essan fans d'animals, betg ina revista scientifica. Scriva a nus a [email protected] e nus curregin.
Tissi en sia pel