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False water cobra

Hydrodynastes gigas

Izenari buruz: It is called a false cobra because it hoods like a true cobra but does not rear up. The Guarani name ñakanina means 'alert head'.1

Min ematen du, besterik ezMin ematen du, baina ez dizu kalte larririk egingo.

Atzeko letagineko sugeak

KoskaJaten du: Haragia

Arriskua pertsonentzat: MingarriaBenetan min handia eman dezake, baina ia inoiz ez da larria.

The false water cobra is a large snake that lives in South America. It is named after true cobras because it flattens its neck to look bigger when threatened, but it is not a true cobra. It is mildly venomous, and its bites rarely cause serious harm to people.1

Non bizi den

Eastern Bolivia to southern Brazil, Paraguay and Argentina, in South America1

Hego Amerika

Hasiera

It prefers wet or humid places such as marshlands and tropical rainforests, though it has also been seen in drier areas. It is a very active snake that spends much of the day climbing, burrowing and swimming.1

Luzera

3 m (9,8 ft)1

Pisua

4,5 kg (9,9 lb)1

Abiadura handiena

6,7 km/h inguru (4,2 mph)

Lehorrean, kalkulu gutxi gorabeherakoa

Zer jaten du?

In the wild it mainly eats fish and amphibians, and also takes small mammals, birds and reptiles. In captivity it can be trained to eat other foods.1

Argazkia: False water cobra — False water cobra. Argazkia: Bernard DUPONT. CC BY-SA 4.0, iNaturalist.

Nola ezagutu

Background colour is olive green or brown, with dark spots and bands over much of the body.1
Bands and colour grow darker towards the tail.1
Large eyes with round pupils. The tongue is black.1
Belly is yellow or brown with dark flecks, which form three dotted lines. Males tend to be yellow underneath and females brown.1
Hatchlings and juveniles are much darker and lack the dark eyes of adults.1

Askotan honekin nahasten da: Its pattern and colouring look somewhat like those of true water cobras (Boulengerina). The easiest difference to see is the hood: when threatened, the false water cobra stays horizontal, while a true cobra rears up.1

Pozoi-ahalmena

Koska

Pozoia letaginetatik edo hortzetatik ateratzen da kosk egiten duenean.

Zer egiten du bere pozoiak?

This snake has enlarged rear teeth that are not grooved, and they are linked to a gland that produces oral secretions with proteolytic activity, meaning they break down proteins. In the few serious cases, symptoms included severe swelling, bruising, numbness, itching and dizziness. Most bites cause only mild pain and minor swelling.1

Zein arriskutsua da pertsonentzat?

Arriskua pertsonentzat: MingarriaBenetan min handia eman dezake, baina ia inoiz ez da larria.

Many bites have been recorded, but only four cases of significant reaction in humans are reported for this species. It is considered mildly venomous.1

Zer egiten du beldurtzen denean?

When threatened, it flattens its neck like a cobra, and can flatten lower parts of its body too, to look larger and more intimidating.1

Kosk egiten badu

Garbitu koska, eutsi pertsona lasai eta lortu mediku-laguntza. Espezie batzuk (boomslang-a, adibidez) hilgarriak izan daitezke ordu batzuk geroago.

Deitu beti lehenik zure larrialdi-zenbakira (112, 000, 911). Lehen sorospenei buruzko orientabide orokorra da hau, ez mediku-aholkua. Lehen sorospenen oinarriak

Egon seguru

Ez ukitu, ez harrapatu eta ez zirikatu inoiz animalia basati bat, txikia izan arren, eta lo edo hilda dagoela badirudi ere.
Utzi tartea. Bat aurkitzen baduzu, egon lasai, egin atzera poliki eta utzi bere bidetik joaten.
Batek kosk egiten badizu: egon lasai, egon geldi, deitu zure larrialdi-zenbakira (112, 000, 911) edo joan ospitalera azkar. Gogoratu nolakoa zen, argazki batek laguntzen du.

Ez dabil zure atzetik. Pozoia janaria harrapatzeko edo bere burua babesteko erabiltzen du, eta askoz nahiago du ezkutatu. Seguru egoteari buruz gehiago

Munduko zein tokitan?

Afrika Asia Europa Ipar Amerika Hego Amerika Australia eta Ozeania

Zein handia da?

Zein luzea da?

Zein astuna da?

1 etxeko katu bezain astuna

3 txakur muturretik buztanera jarrita bezain luzea17 banana bata bestearen atzetik jarrita bezain luzeaetxeko katu bat bezain astuna, gutxi gorabehera100 metro 54 segundotan egin litzake (gizakirik azkarrenak 9,6 behar ditu)

Zein handia da False water cobra ZUREKIN alderatuta?

Matematika hutsa zure nabigatzailean. Ez da ezer gordetzen, ezta inora bidaltzen ere.

Zein azkarra da?

Oinez doan pertsona bat 5 km/h inguru (3,1 mph)

False water cobra 6,7 km/h inguru (4,2 mph)

Bizikletan doan haur bat 12 km/h inguru (7,5 mph)

jakin beharrekoa

Datuak

Captive-bred individuals can become quite tame and trusting, and many show a high level of intelligence.1

Temperaments vary a lot: some individuals are docile, while others are defensive or even aggressive.1

Males are much smaller than females, a difference called sexual dimorphism.1

It is mainly active during the day, which gives it good daytime vision thanks to its large eyes.1

Mito-hauslea

Mitoa: It is a true cobra.

Egia: It is not a true cobra. It hoods in a similar way, but stays horizontal instead of rearing up.1

Pozoi-adituentzat

Izen zientifikoa: Hydrodynastes gigas
Taldea: Atzeko letagineko sugeak
Familia: Colubridae2
Ordena: Squamata
Kontinenteak: Hego Amerika
Arriskua pertsonentzat: 2 / 5: Mingarria3

Datuak nondik datozen

Hydrodynastes gigas (Wikipedia (CC BY-SA 4.0))
Hydrodynastes gigas (iNaturalist): izenak eta sailkapena.
Venom Wiki: arrisku-maila, ohiko tamaina eta abiadura-kalkulua geureak dira. Ikusi nola kalkulatzen ditugun: Nola baloratzen dugun arriskua.

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