Very cute and adorable entry! However, the physics were kinda weird and did not work as I would expect, so I found it pretty difficult to actually throw animals over the moon.
Suggestion for improvement - if you go too high with your cursor, the UFO stops moving completely. I know this is probably implemented to prevent player from going too high with UFO. But I think the game should still check X coordinates and move accordingly (so that player cannot go too high, but can still go to the sides).