1.   Considering the size of their natural prey - small mice and birds - this is not so surprising.

2.   But wolf packs have not prowled it for decades, so the animals that would be their natural prey live there in comparative peace.

3.   Mountain lions are coming there because there is natural prey.

4.   Prairie dogs are the natural prey of ferrets.

5.   Sharks congregate in these areas, because their natural prey congregates there.

6.   They also were released along traditional migration routes of elk and deer, their natural prey.

7.   Packs of marauding native dogs, known as dingoes, are attacking sheep flocks in the outback because drought has wiped out their natural prey, ranchers say.

8.   But he noted that rampant deforestation and the depletion of natural prey have forced the tigers out of their natural habitat.