It is one of the common names of a very poisonous snake, Bothrops genus and family Viperideae. It is also known as yayaraca, jararaca, oxtail (rabo-branco), yarara, yaraca, its scientific name is Bothrops jararaca. In the Tupi language, yaraca is snake. It is located in the South of Brazil and parts of Paraguay and Argentina. In Colombia there is also a similar species, also it is called yarará or four noses.
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