She could now run more swiftly at Kazan's flank.

Scent and hearing had become wonderfully keen.

She could wind a caribou two miles distant, and the presence of man she could pick up at an even greater distance.

On a still night she had heard the splash of a trout half a mile away.

And as these two things--scent and hearing--became more and more developed in her, those same senses became less active in Kazan.
He began to depend upon Gray Wolf.