Bats are the only mammals that fly
With sufficient thrust, pigs fly just fine
A golf ball is dimpled because that produces less drag and flies farther than if it were smooth
Dragonflies are expert at flying; They can go straight up and down, hover like a helicopter and can even mate mid-air.

Flight is a strange combination of proximity and separation... that ground'seconds away'thousands of miles away.
Flight is a thing which, once tasted, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.
Flight is not just the conquering of space, but the devouring of it. The air becomes a solid support and one becomes stronger than the wind.
Albatross can sleep while flying
Flight is not so much a desire to fly as a rebellion against the tyranny of time and space.