Down went Lad in a heap, and the mongrel struck.

Before the collie could regain his feet the mongrel's teeth had found a hold on the side of Lad's throat. Pinning down the muzzled dog, the mongrel proceeded to improve his hold by grinding his way toward the jugular. Now his teeth encountered something more solid than mere hair. They met upon a thin leather strap.

Fiercely the mongrel gnawed at this solid obstacle, his rage-hot brain possibly mistaking it for flesh. Lad writhed to free himself and to regain his feet, but seventy-five pounds of fighting weight were holding his neck to the ground.

Of a sudden, the mongrel growled in savage triumph. The strap was bitten through!

Clinging to the broken end of the leather the victor gave one final tug. The pull drove the steel bars excruciatingly deep into Lad's bruised nose for a moment. Then, by magic, the torture-implement was no longer on his head but was dangling by one strap between the muzzled mongrel's jaws.

With a motion so swift that the eye could not follow it, Lad was on his feet and plunging deliriously into the fray. Through a miracle, his jaws were free; his torment was over. The joy of deliverance sent a glow of Berserk vigor sweeping through him.

The mongrel dropped the muzzle and came eagerly to the battle. To his dismay he found himself fighting not a helpless dog, but a maniac wolf. Lad sought no permanent hold. With dizzying quickness his head and body moved—and kept moving, and every motion meant a deep slash or a ragged tear in his enemy's short-coated hide.

With ridiculous ease the collie eluded the mongrel's awkward counter-attacks, and ever kept boring in. To the quivering bone his short front teeth sank. Deep and bloodily his curved tusks slashed—as the wolf and the collie alone can slash.

The mongrel, swept off his feet, rolled howling into the road; and Lad tore grimly at the exposed under-body.

Up went a window in the hovel. A man's voice shouted. A woman in a house across the way screamed. Lad glanced up to note this new diversion. The stricken mongrel yelping in terror and agony seized the second respite to scamper back to the doorstep, howling at every jump.