1.   A few biologists even question whether wolves ever lived in the region.

2.   But Downes wrote that evidence from Minnesota, where wolves live near dairy farms, showed that wolves prefer wild game to domestic animals.

3.   For instance, wolves live in packs, and dogs tend to form packs.

4.   Since all Mexican wolves have lived all their lives near humans, the wolves must develop an aversion to people and domestic livestock, one Lincoln Park zookeeper said.

5.   Wolves typically live only six years.

6.   Twenty-four more wolves lived on Isle Royale in Lake Superior.