Lazy Dog — ball-and-rope puzzle
The dog is too lazy to go after the ball, so you have to get the ball to him. You draw rope-like lines and use them to guide the ball through the level. The ball obeys physics, so the angle of the line and when you draw it both matter. A similar line-drawing challenge is in Draw Bridge - Brain Game.
Bones and a cannon
Getting the ball to the dog is only half the job. There are bones on every level, and you only get the max score if you collect them all. Some levels also have a cannon: it speeds the ball up and helps you reach every target.