Protective. Similar to other herding and sheepdogs, Border Collies have a protective temperament and can be distrusting of strangers. ... The protective quality of Border Collies also makes them excellent watchdogs. They will always alert their family when they notice anything out of the ordinary.

Are Border Collies good guard dogs?

Unfortunately, the Border collie can be anything but a guard dog. ... While the Border collie is known to nudge stubborn children and nip at the heels of livestock, these behaviors do not necessarily display aggression. These traits are traces of the genetic lineage of herding dogs.

Are Border Collies aggressive?

Border Collie puppies are notoriously mouthy, and often nip and bite at their owners. Although some behaviors appear aggressive, they may actually be quite normal. There can be aggression in Border Collie puppies, but this is rare.