Summary This paper describes the principles used in traditional animation to create convincing and interesting animations. The author discusses how these principles apply to 3-D computer animation and how to apply them. Problem Tools for 3-D animation and modelling were finally becoming widespread. As more people begin to use these applications, the more "bad" animations would be produced by those not understanding the traditional principles of animation. Methods Used The methods used to solve the problem are the traditional principles of animation which include (but are not limited to) squash and stretch, slow-in/slow-out, exaggeration, anticipation, etc. Key Ideas/Contributions 1. Traditional principles of animation result in convincing, good-looking animation that is enjoyable to watch. 2. The traditional principles of animation are applicable to 3-D computer animation.