おうぶくろむささびだったら
大袋鼯鼠だったら
ōbuku romusasabidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of おおふくろももんが

1. If it were a giant flying squirrel; If it was a giant flying squirrel

Tara Conditional
Usually Written in Kana