A large beaver swam around the hole, sniffed and looked, then silently climbed the bank, evidently making for a certain aspen tree that he had already been cutting.

He was in easy range, and the gunner was about to fire when Rolf pressed his arm and pointed.

Here, wandering through the wood, came a large lynx.

It had not seen or smelt any of the living creatures ahead, as yet, but speedily sighted the beaver now working away to cut down his tree.
As a pelt, the beaver was worth more than the lynx, but the naturalist is strong in most hunters, and they watched to see what would happen.
The lynx seemed to sink into the ground, and was lost to sight as soon as he knew of a possible prey ahead.

And now he began his stalk.