Similarly in 1897 the largest Beaver pond in the Park was at Obsidian Cliff. I should say the dam there was over four hundred yards long. But now it is broken and the pond is drained. And the reason as before—the Beavers used all the food and moved on. Of course the dam is soon broken when the hardworking ones are not there in their eternal vigilance to keep it tight.
There are many good Beaver ponds near Yancey's now and probably made by the same colonies of Beavers as those I studied there.
Last September I found a fine lots of dams and dammers on the southeast side of Yellowstone Lake where you may go on a camera hunt with certainty of getting Beaver pictures. Yes, in broad daylight.
Let me correct here some popular errors about the Beaver:
- It does not use its tail as a trowel.
- It does not use big logs in building a dam.
- It does not and cannot drive stakes.
- It cannot throw a tree in any given way.
- It finishes the lodge outside with sticks, not mud.
THE OTTER AND HIS SLIDE
Every one of us that ever was a small boy and rejoiced in belly-bumping down some icy hill, on a sled of glorious red, should have a brotherly sympathy for the Otter.
While in a large sense this beautiful animal belongs to the Weasel family, it has so far progressed that it is one of the merriest, best-natured, unsanguinary creatures that ever caught their prey alive. This may be largely owing to the fact that it has taken entirely to a fish diet; for without any certain knowledge of the reason, we observe that fisherfolk are gentler than hunterfolk, and the Otter among his Weasel kin affords a good illustration of this.
We find the animals going through much the same stages as we do. First, the struggle for food, then for mates, and later, when they have no cause to worry about either, they seek for entertainment. Quite a number of our animals have invented amusements. Usually these are mere games of tag, catch, or tussle, but some have gone farther and have a regular institution, with a set place to meet, and apparatus provided. This is the highest form of all, and one of the best illustrations of it is found in the jovial Otter. Coasting is an established game with this animal; and probably every individual of the species frequents some Otter slide. This is any convenient steep hill or bank, sloping down into deep water, prepared by much use, and worn into a smooth shoot that becomes especially serviceable when snow or ice are there to act as lightning lubricants. And here the Otters will meet, old and young, male and female, without any thought but the joy of fun together, and shoot down one after the other, swiftly, and swifter still, as the hill grows smooth with use, and plump into the water and out again; and chase each other with little animal gasps of glee, each striving to make the shoot more often and more quickly than the others. And all of this charming scene, this group and their merry game, is unquestionably for the simple social joy of being together in an exercise which gives to them the delicious, exhilarating sensation of speeding through space without either violence or effort. In fact, for the very same reason that you and I went coasting when we were boys.