Originally Posted by colliewog
They look similar, but temperamentally they are different. Collies are usually more assertive, more protective, and not quite as "eager to please" as a Sheltie. They are awesome and easy to train, but you've got to show them WHY they must do something, as opposed to just telling them to do it. However, they are both herding dogs, so the energy level and barking characteristics are similar - they must have a job and are very vocal, although Collies aren't quite as vocal as Shelties.
Thanks for the info, colliewog.
The reason I asked is that I've only ever had easy to care for dog coats before and the smooth collie looks much simpler to groom than the rough collie or sheltie.