At last the dam was so high and solid that the water could not flow through. So it spread out in a pond above the dam till it was deep enough to trickle over the top and tinkle away in a little brook under the trees.
Tiny islands were left here and there in the pond. The old beavers built their houses on the islands or on the bank. First each mother and father dug two tunnels from the bottom of the pond up through the earth to the floor of their house. One tunnel was to be used when going in and out during the summer. The other tunnel led to their winter pantry under the water. This pantry was to be a pile of fresh sticks cut in the woods every autumn.
Around the two holes in the floor the beavers laid logs and stones in a circle. Upon this foundation they piled sticks and sod to form walls and a roof. Then they plastered the house all over with mud. At the top of the roof they left a small hole, covered only with a tangle of sticks. This was for fresh air. Last of all they swam inside and made the walls even by gnawing off the sharp ends of the wood. Then the house was ready to be furnished with beds of leaves and grasses.
Perhaps during the happy summer the babies believed that play was the most delightful thing in the world. But soon the father beavers came strolling back to the village to cut down trees for the winter. Then the little fellows found that work was even better fun than play.
One night the three babies followed their parents into the woods and watched them cut down a tree. The father stood up on his hind-legs, propping himself with his tail, and began to cut a notch around the trunk. The mother helped on the other side. They gnawed upward and downward, digging out huge chips with their chisel teeth. The circle grew deeper and deeper, till the father’s head was almost hidden whenever he thrust it in to take a fresh bite.
When finally the wood cracked and the tree-top began to sway all the family scampered away to the pond. They dived for the tunnel and hid in the house for a while. There was danger that some hungry wild-cat had heard the crash of the branches and had hurried there to catch them for its supper.
As soon as it seemed safe to do so the beavers paddled out again and trotted away to the fallen tree. The parents trimmed off the branches and cut the trunk into pieces short enough to carry. The father seized a thick pole in his teeth and swung it over his shoulders. As he dragged it toward the pond he kept his head twisted to one side, so that the end of the pole trailed on the ground.
The biggest little beaver tried to drag a smaller branch in the same way. When he rose on his hind-legs, so as to walk along more easily, he forgot to brace himself with his tail. The branch caught on a stone and tipped him backwards, heels over head. The two other babies were rolling a short log by pushing it with their noses. At the sound of their brother’s surprised squeals they gave the log a last wild poke. It seemed to make a jump over a bump, and then tumbled into a hole. There it stayed, though they pushed and pulled and puffed and grunted in trying to get it out again.
It happened that the father beaver reached the pond just in time to help mend the dam with his thick pole. A pointed log had jammed a hole in the dam. The water was beginning to pour through the hole with a rush. If the pond should run dry the doors of the tunnels would be left in plain sight. Then probably a wolf, or some other enemy, would hide there to catch the beavers on their way from the woods to their houses.