Physical Danger
You'll be spending a heck of a lot of time mousing or keyboarding all those pixels into animated, pseudo-real creations. So watch out for computer-related maladies, like repetitive stress injury or carpal tunnel syndrome. Posture really is important if you're sitting in front of a computer for eight hours or more per day, and if you're drawing or modeling clay, you'll often need to hunch over your work. Just remember to stretch as needed and take breaks often.