Do you recommend any breeds good for guarding, good with livestock & other animals but won't chase them?

Im not sure what i would suggest but my friend had a merama ( spelling? ) and he ate one of her baby sheep when it was born, not cool. She also had a Great Pyrenees that was horrible with kids and both breeds do herd. As for border collies if you don't want them working your cattle then they are not the dog for you but they are super sweet gentle breed and i have had 3 and they are fantastic with my kids very loving and very protective