Name that breed... Take #2

Here we go again... The rules are the same as last time.. First person to comment with the correct breed will win a day of doggie daycare. The breed that we are thinking is first and foremost one of the oldest, if not the oldest, of herding breeds.  We have a dog of this breed named "Bella" that comes to daycare.

Have fun!

--->> UPDATE... We have a Winner... It was a Rottweiler.  Way to go Fletcher's Mom!