>>110This is true in some cases. More true in Big production teams like you would find at AAA game/Main film studios. In any animation project Their is allot to be done, and it helps if you can pitch in where ever you can, or are highly skilled at your area of work. Here is what needs to be done from the top of my head.
film Treatment
Script
concept art
character design
Story boarding
Acting
Tracking
Dope sheets
line testing
Pitch
modelling
Texturing
rigging
Key framing
inbetweenes
clean-up
Rendering
Post production.
A good animator is a swiss army knife of skills that can do not necessarily all of the above, but can certainly do multiple tasks in the work flow.