what would the world be like if cow and pigs can fly and swim,would they be dangerous to us or would they become a sport in hunting for our survival,what would happen if a airplane flying up in the sky and along came a fat slow pig flying up in the sky,i don't think the plane would survive if that 60 pound pig get suck in..If cow can swim would they be a piece of beef jerky for sharks and alligator,thanks for listening to this weird story but if this stuff happen i think the world has come to it end