A two-year-old followed, round and sleek and glistening like brown velvet in the sunset.

For two minutes the bull stood alert, eyes, ears, and nostrils seeking for danger-signals; at his heels the younger animal nibbled less suspiciously at the grass.

Then lowering his head until his antlers swept back over his shoulders the old bull started slowly toward the lake for his evening drink.

The two-year-old followed--and Thor came out softly from his hiding-place.
For a single moment he seemed to gather himself--and then he started.
Fifty feet separated him from the caribou.

He had covered half that distance like a huge rolling ball when the animals heard him.