And he ran at top speed.
The girl's three companions, turning at sight of her gesturing hand, beheld a mahogany-and-white thunderbolt whizzing down the hundred-yard slope toward them.
It chanced that both the men had served long apprenticeship as dog-fanciers; and that both of them knew collies.

Thus, no second look was needed.

One glimpse of the silently charging Lad told them all they needed to know.

Not in this way does a blatant or bluffing watchdog seek to shoo off trespassers.

This giant collie, with his lowered head and glinting fangs and ruffling hackles, meant business.