The dinosaur is hungry and he wants to eat.  It is a known fact that dinosair aren't that smart because their brains are small.  That is why; they can't think complicated things like human's do.  The dinasaur needs to be feed and that is your job. The game is played via mouse.   You need to trigger something on the game that will result for the dinosaur to reach the donut. While you are at it, try to grab the three stars.  The game will be harder as you progress in the game, but it will be easier if you are adept to using your brains to problem solving.