Cascaval

...However, the damage caused by highly venomous rattlesnakes is common in North America, where they are widely distributed, and several species, such as the large Western diamondback rattlesnake, are particularly dangerous. The southern rattlesnake C. durissus (English names cascabel/cascaval), which is widely distributed in tropical America, is also feared locally. All rattlesnakes are ovoviviparous, giving birth to 10-20 or even 60 baby snakes at a time. ...

*Some of the terminology explanations that mention "cascaval" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…しかし毒性の強いガラガラヘビ類による被害は，分布の広い北アメリカで多く，とくに大型のニシダイヤガラガラヘビなど数種類は危険。また熱帯アメリカに広く分布するミナミガラガラヘビC.durissus(英名cascabel∥cascaval)も現地では恐れられている。ガラガラヘビ類はすべて卵胎生で，1度に10～20匹から多いものは60匹の子ヘビを生む。…

※「cascaval」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報