よこばいガラガラへびだったら
横這いガラガラ蛇だったら
yokobai garagara hebidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of よこばいガラガラへび

1. If it were a sidewinder rattlesnake…; If it was a sidewinder rattlesnake…

Tara Conditional
Usually Written in Kana