It is probable that lions mate for life. Sometimes they live year after year in the same den and prowl over the same local territory. This territory, I think, is rarely more than a few miles across; though where food is scarce or a good den not desirably located, they may cover a larger territory.
Lions commonly live in a den of their own making. This is sometimes dug in loose sand or soil where its entrance is concealed among bushes. Sometimes it is beneath a fallen log or a tree root, and in other places a semi-den, beneath rocks, is enlarged. In this den the young are born, and the old ones may use it a part of each year, and for year after year.
Though occasionally a mother lion may raise as many as five kittens, rarely does she succeed in raising more than two; and I think only two are commonly brought forth at a birth. These kittens probably remain with the mother for nearly a year, and in exceptional cases even longer. As I have seen either kittens or their tracks at every season of the year, I assume the young may be born at any time.
The mountain lion is a big-whiskered cat and has many of the traits possessed by the average cat. He weighs about one hundred and fifty pounds and is from seven to eight feet long, including a three-foot tail. He is thin and flat-sided and tawny in colour. He varies from brownish red to grayish brown. He has sharp, strong claws.
Mr. Roosevelt once offered one thousand dollars for a mountain lion skin that would measure ten feet from tip to tip. The money was never claimed. Apparently, however, in the state of Washington a hunter did succeed in capturing an old lion that weighed nearly two hundred pounds and measured ten and a half feet from tip to tip. But most lions approximate only one hundred pounds and measure possibly eight feet from tip to tip.
The lion eats almost anything. I have seen him catching mice and grasshoppers. On one occasion I was lying behind a clump of willows upon a beaver dam. Across the pond was an open grassy space. Out into this presently walked a mountain lion. For at least half an hour he amused or satisfied himself by chasing, capturing, and eating grasshoppers. He then laid down for a few minutes in the sunshine; but presently he scented something alarming and vanished into the thick pine woods.
One evening I sat watching a number of deer feeding on a terrace of a steep mountain side. Suddenly a lion leaped out, landing on the neck of one. Evidently the deer was off balance and on a steep slope. The impact of the lion knocked him over, but like a flash he was upon his feet again. Top-heavy with the lion, he slid several yards down a steep place and fell over a precipice. The lion was carried with him. I found both dead on the rocks below.
The lion is a master of woodcraft. He understands the varying sounds and silences of the forest. He either hides and lies in wait or slips unsuspected upon his victim. He slips upon game even more stealthily than man; and in choosing the spot to wait for a victim he usually chooses wisely and, alert waits, if necessary, for a prolonged time. He leaps upon the shoulders and neck of horse, deer, or sheep, and then grabs the victim’s throat in his teeth. Generally the victim quickly succumbs. If a lion or lioness misses in leaping, it commonly turns away to seek another victim. Rarely does it pursue or put up a fight.
A friend wished a small blue mule on me. It had been the man’s vacation pack animal. The mule loitered round, feeding on the abundant grass near my cabin. The first snow came. Twenty-four hours later the mule was passing a boulder near my cabin when a lion leaped upon him and throttled him. Tracks and scattered hair showed that the struggle had been intense though brief.
Not a track led to the boulder upon which the lion had lain in wait, and, as the snow had fallen twenty-four or more hours before the tragedy, he must have been there at least twenty-four hours, and he may have waited twice as long.