The herding instinct is strong in the canine species, but is usually limited to critters with four feet, possibly two – but almost never do you see a dog herding a school of anything. In this case, the herdees have a great many more pointed and larger teeth than the determined herders who bite them with impunity! It must be like a bus drivers holiday for the playful pooches.
This story is more impressive and chilling in light of the search that is underway in southwest Australia for the Great White who is believed to have taken the lives of three people in two months.