Well you dont have to draw perfect to be a good animator but it will help you if you can draw different poses on the paper.
Some very ruff skatches will do much to see how some character looks like in different poses!

Sense for timing and acting (especialy for expressions) is needed to create beleviable character.

So, when something will happen and how it will happen,action and reaction...

talent and training just like in every aspect of life

Good luck!