百歩蛇

百歩(ひゃっぽ) (hyappo, “one hundred steps”) + 蛇(だ) (da, “snake, serpent”)

• IPA^(key): [ça̠p̚po̞da̠]

百(ひゃっ)歩(ぽ)蛇(だ) or 百歩蛇(ヒャッポダ) • (hyappoda) 

1. Deinagkistrodon acutus, a species of pit viper

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).