1.   So I began imitating the high-pitched sound of a mother wolf calling her young.

2.   When the mother wolf spotted me, she stood erect.

3.   The mother wolf was clearly suffering.

4.   I glanced toward the nervous mother wolf.

5.   After a while, with her babies darting around her, the mother wolf was ready to leave and began to limp off toward the forest.

6.   At the same time, the mother wolf sent a long howl into the crisp air.

7.   A moment later, we spied a mother wolf cavorting with three pups.

8.   The mother wolf was born four years ago at the Binder Park Zoo in Battle Creek, Mich.