Border collie know the way home? How strong is the sense of territory

The border collie knows the way home because the dog is a strong sense of territory, generally by leaving their own scent, to help themselves find their way, which is equivalent to walking a section of the road will urinate a section of the road, so you will often see the dog on the road for convenience, this “stink between the traces” performance, is said to help them find their way home, by the smell they left back home, so the border collie dog can know the way home.