My friend and fellow-naturalist, Ralph Stuart Murray, in writing to me from Quebec, says: "In speaking of animal road builders, I might say that the rabbit or hare of the north woods deserves much attention, for greatly interesting are his highways. The life of the north woods brings one constantly in touch with these roads, which, after generations upon generations of constant use, are worn deep and smooth into the moose grass and muskeg through which they run. At places, several distinct paths intersect, and it is curious to note that while these roads wind in and out underneath the low hanging evergreens, the 'cross-roads' will invariably be located in a clear open space, often on the top of some small hillock.
"The great age of these roads is very evident when compared with the newer, shallower paths of more recent years. So deep are the old ones, in fact, that the quiet watcher in the woods will occasionally see two large, upright ears—unmistakably those of a rabbit, seemingly sticking out of a hole in the ground—yet moving at a rapid pace, and all the while no rabbit in view. For all the world these vertical ears belonging to an unseen owner resemble in use and appearance the periscope of a submarine—the difference being that the rabbit uses his 'periscopes' for hearing, in order to locate and avoid his foe, the submarine its periscope to locate and attack its enemy."
The sheep terraces, which are so common on the sides of hills, though made by sheep, are not roads, but feeding grounds. Sheep, when walking on a hillside, invariably graze on the upper side, as they cannot reach the lower grass. Therefore they walk backwards and forwards on the slope, just as a reaping machine is driven over a hillside wheat-field. As the sheep takes a "neck's length" each time, the little ridges or roads correspond exactly with the measurements of the sheep's neck.
There are as many kinds of roads and terminals in the animal world as there are in the human, and lest our pride make us forget, we should remember that even the Panama Canal is dug according to the plan of a crawfish's canal, such as may be seen near any muddy stream. It is strange that no animal has learned to build elevated roads, though animals that live in trees, like flying squirrels, monkeys, and flying foxes, are very skilled in going from one tree to another. They have regular aerial highways, and some of the tree frogs are veritable wonders in the accuracy of their leaps from tree to tree. Even more skilled than these are the agamid lizards of India, whose chief means of travel is a folding parachute, which at a moment's notice can be erected and carry to another tree its lucky possessor. In Borneo is an aviator tree-snake which is able to so spread his ribs and inflate his body that he can actually sail from branch to branch in the tree-tops.
There are night travellers as well as day travellers; in fact, there are more animals that roam around in a great forest at night than in the daytime. They sleep during the day, when the day animals are roaming about, and go forth to roam when it is night. It is then they seek for prey, and are much feared by day animals. They see well in the dark, and travel so lightly that their footsteps cannot be heard.
On the Island of Java are found a family of strange, dwarfish little beings, which are called by the natives malmags, or hobgoblins. And they are well named, for they look like creatures of a distorted imagination more than real, living animals. They travel only at night, and so superstitious are the natives of their evil influence that if one of these uncanny little creatures appears near their rice fields, the plantation is immediately abandoned. However, these small creatures are no larger than squirrels, and are perfectly harmless. They are very rare even in their native lands—the Oriental Archipelago and the Philippine Islands. They rear their young in the hollow roots of bamboo trees, and to disturb their nests means to incur the evil of all the land.
Night animals do not go forth to travel and seek prey until the night is far advanced, and their prey is soundly sleeping. They seem to know the exact time of the night, as if they had watches or clocks, and they usually go forth to hunt about midnight and return to their homes about four o'clock. Only in cases of extreme hunger do they vary from this rule.
How marvellously skilled are they in finding their way! They pass through a crowded forest as though it were daytime, and strangely enough know just how to return to their lairs. This special sense or gift is not possessed by man; he must have marks and signs to return to a definite place.
These night-travellers number among their lot bats, flying squirrels, leopards, and prowling snakes.
Bats are not only the most interesting of the night-travellers, but by far the most curious and wonderful animals in the world. They are hideously ugly, reminding one more of a miniature, closed-up umbrella than an animal! They are coarse, awkward, when not in flight, and repellent; yet they have such highly developed senses that they have no rivals in the animal world. They excel most birds in flight, are able to make long nightly journeys, in which they use their wings not only for flight, but as air-bags in which they catch all kinds of flying insects. Their sense of touch as we know it is really a combination of touch, sight, and hearing.