whoah I really thought that an animator has a knowledge of all these things. What I wanted to ask really is what tools were generally used to make this: https://www.youtube.com/watch?v=lsLXQEeLiI0&feature=fvw (just an example).
Oh and do you think that I won't be able to get a job where I can both make models, dynamics and animate all together? Oh and I want to know if it's possible that only one guy made that animation?

edit: Would the name "3d artist" suit the job I want to get ready for better?