This hoof reading was a curious thing. Breed could not tell why he knew when a horse was ridden, but invariably he did. If walking, the feet of an iron-shod horse struck pebbles and rocks with a metallic sound and Breed was suspicious of all horses that wore shoes; but usually a rider traveled at a steady trail trot. It was not the way of loose horses to strike a steady, regular gait and hold it, and the even vibrations of a shuffling trail trot beat through all other sounds and warned him that a horseman was near.

Men grossly underestimate the keen physical senses of the animal world, being loath to credit them with finer sense perceptions than those possessed by man, dulled by countless centuries of disuse. A coyote can scent the tracks left by a bird long hours past; the smell of fresh blood is hot in his nostril a full half-mile downwind while the nose of man could scarce detect it at a distance of two feet. His ears, attuned to receive the delicately shaded tone inflections of coyote converse, catch vibrations of sound far too fine to make the least impression on the ears of man. And it is through these sense impressions that animals are warned at distances which men believe impossible without the aid of some subtle intuition or sixth sense. They speak of these things as animal instinct and let it go at that.

In addition to this Breed had many other ways of protection at his command; he usually knew of the approach of man long before the direct message reached him over the paths of his own physical senses,—this from his vast knowledge of the ways of animals and birds and his ready understanding of their widespread systems of communications. Their actions frequently put him on guard before his own senses apprised him of the actuality of the danger.

These things, coupled with his own habits and backed by coyote intelligence, made Breed an animal most difficult to stalk.

Collins knew the wolf habit of bedding on a rise of ground. He knew too that the dog who turns round and round before lying down is not merely chasing his tail but instead is exhibiting a relic of his wild ancestors' way of rising frequently from his bed and turning to look off in all directions before resuming it. Day after day Collins swept the range with powerful glasses and through his knowledge and persistence he located Breed at last.

Breed lay on the crest of a knoll. Peg and Cripp were hunting in the shallow basin below him and he watched with keen interest the diabolical cunning of his two chief followers. Peg ranged in the open while Cripp paralleled his course, moving along just behind the wave of a low ridge. A long-eared jack rabbit bounced from his bed in front of Peg and fled swiftly for a hundred yards, then halted to look back as he discovered that he was not pursued. He reared on his haunches, forefeet clear of the ground, as he watched the coyote who had veered away from him and was now questing aimlessly through the stunted sage. Peg turned toward him again and the jack bounced away toward the ridge, stopping again as Peg swung away. From his point of vantage Breed could see the cunning Cripp keeping even with the jack, following closely its every move and peering at it through the scattered sage that topped the ridge. Peg, apparently unconscious that there was meat in sight, rambled in erratic tacks that crowded the rabbit toward the ridge. Breed saw a crouching shape slip behind a sage within ten feet of the jack, whose eyes were occupied with Peg. There was a flash of yellow as Cripp struck him and the dying squall of the big hare floated to Breed's ears. He rose from his bed in excitement, then paused to sweep the country with his gaze before resuming his nap.

Collins had seen! From the point of a commanding ridge five miles away he had centered his binoculars on the yellow wolf. The wolfer's horse grazed in the bottom of a gulch, his reins trailing loose, and Collins moved swiftly down to him and swung to the saddle. He had covered less than two hundred yards before Breed, five miles away, knew that a man rode toward him!

The pronghorn antelope has a most peculiar signal system of his own. He is furnished with a white patch on his rump, the hair long and stiff, and when alarmed, instead of bristling his neck roach as do other animals, the antelope bristles this white rump patch. The sun strikes light from the glistening hair and every antelope within view follows suit; the warning is flashed from band to band till every antelope throughout an area of many miles knows that some man is abroad on the plains.

Whenever a band of antelopes sported within view of Breed his eyes flickered open for frequent glimpses of them. Ten minutes after the two coyotes had killed the jack Breed opened his eyes for a view of a pronghorn buck that had taken his stand on a low ridge half a mile away. Breed caught the danger signal and was instantly alert. For as far as his eye could reach he could see the glistening points of light which he knew for antelope flashes. The whole antelope tribe was facing toward the danger and so pointed out its direction for Breed. It is this sort of signaling which men will not understand, preferring instead to credit an animal, warned at a distance of many miles, with some mysterious occult knowledge.

A band of antelope joined the buck on the ridge and fled with him toward Breed, stopped to look back, stamping their feet excitedly, then swept on past as a rider topped the ridge they had just left.