Chapter IV: Strange Dwellers of the Desert

The representatives of the animal kingdom in the desert are fully as strange and curious as are the specimens of vegetable life. It may seem strange that animal life should exist at all in this region of death and desolation, but several forms of creatures seem to find this dread region congenial.

In keeping with its surroundings is the _crotalus cerastes_, one of the most deadly of the rattlesnake family. It is known to the frequenters of the desert region as the "sidewinder," because of its alleged propensity for springing sidewise at the object of its wrath, and because it travels with a sidelong motion. The bite of this creature is considered to be certain death, and it is a saying in the West, when some unusually frightful catastrophe overtakes one: "It was a regular sidewinder."

The sidewinder is of a grayish color, mottled with dark blotches. It is found in the very heart of the desert, miles and miles from any known supply of water, and it is believed by many to be able to exist without that fluid.

Near the borders of the desert the great yellow diamond-back rattler, _crotalus horridus_, is found, as well as a species of constrictor known as the "bull snake." The latter grows to a length of ten or twelve feet and, while formidable to look upon, is perfectly harmless.

Such innocence is not claimed for the Gila monster, _heloderina horridum_, which is found in the southern portion of the Colorado Desert. This huge lizard is like the chameleon in one respect: it changes its color to conform to its surroundings. It is in the main of a yellow hue, with dark markings which change to a gray or to a reddish tint according to the character of the soil about its abiding-place. When it lies quietly upon the earth it is very difficult to detect it because of this resemblance to the soil.

The Gila monster attains a length of nearly two feet. It is covered with horny protuberances and scales similar to the horned toad, so called. When angry it makes a hissing noise not unlike that made by a serpent.

The horned toad--which is not a toad, but the lizard _phrynosoma_--is an innocent little fellow, attaining a length of six or eight inches at the most. There was a time when his reputation for evil was second only to that of the Gila monster. Now that he is better known he has become a plaything of children and a pet in many a household.

A common creature in the portions of the desert in which cacti abound is the cactus rat, a small rodent about midway in size between the mouse and the ordinary rat. He is provided with a bushy tail which he carries over his back, squirrel fashion. He lives upon the barrel cactus, a plant so protected by spines as to seem unapproachable by man or animal. The cunning rat, however, has found a way of attacking this formidable vegetable. He burrows in the earth at the foot of the plant and comes at it from beneath. One specimen of the matured plant will keep a colony of the rats several months. They gnaw at its vitals till nothing but the empty shell remains, then they emigrate to some other plant and there set up housekeeping for another six or eight months.

Living so far from a habitable country, the rat finds few enemies to molest it. The rattler is about the only creature which preys upon it, therefore it thrives and multiplies in the midst of the fearful region it has chosen for its home.

It is astonishing to the desert traveler, after he has crossed half a hundred miles of parched and barren territory, to find about the spring of an oasis tortoises basking in the sun or swimming in the waters of the desert well.

The desert tortoise differs from the ordinary tortoise in several respects. It never exceeds in length over fifteen or sixteen inches, but in form and other characteristics it more nearly resembles the sea turtle than it does the tortoise. This leads to the belief that the desert specimen is the descendant of a sea turtle that throve in the waters of the gulf when it extended over the now desert country. Change of conditions from sea to land--and most forbidding land at that--is supposed to have dwarfed the original species till a new one is the outcome of the change.

If one familiarizes himself with the desert, he will find that the rattler and the Gila monster are not the only representatives of the "poison people" in that region. The scorpion, the tarantula, and the centipede make their home there and add to the dangers and terrors of desert travel. There are also animals found here and there in the desert and along its borders, which cannot be classed as typical desert animals. Bands of wild horses and wild burros are known to roam the formidable region, migrating from oasis to oasis, cropping the grasses at one place till they are exhausted, then moving across the burning sands, guided by unerring instinct, to the next green spot in the desert, twenty, forty, or perhaps fifty miles away. The coyote, too, finds his way to nearly all portions of the desert, and even in the midst of the great desolate waste his uncanny cry goes up in the night-time, making the darkness still more lonely for the chance traveler who pitches his tent in the land of terror.

Few birds are seen in the desert after one has left the border-lands behind, but there is one inhabitant of the air which is never absent. Hovering ever over the region of death is the vulture, ready to settle down to his grewsome feast the moment thirst and heat shall have robbed his victim of life. One may scan the heavens with never a sight of one of these birds while all goes well with himself and his beast, but let one of his horses or burros fall by the way, and lo! from the heavens descend numbers of the birds, and, should a traveler pass that way a few hours later, he would find but the whitening bones of the animal and a few fragments of the hide. And were he to look aloft, he, too, would discern not a speck against the blue canopy above him.