YOU SAID:

it grew legs, started flopping around, and now it is screaming like a pig

INTO JAPANESE

足が生えてバタバタし始め、今では豚のように鳴いている

BACK INTO ENGLISH

It's got legs, it's starting to flutter, and now it's squealing like a pig

INTO JAPANESE

脚があり、羽ばたき始め、今では豚のように鳴きます

BACK INTO ENGLISH

Has legs, started flapping wings and now squeals like a pig

INTO JAPANESE

脚があり、羽ばたき始め、豚のように鳴くようになりました

BACK INTO ENGLISH

It has legs, it started flapping its wings and squealing like a pig

INTO JAPANESE

脚があり、羽ばたき始め、豚のように鳴き始めました

BACK INTO ENGLISH

It has legs, it started flapping its wings and squealing like a pig