| Dogs can be vaccinated against the virus, but it is not feasible to trap and vaccinate all the wild wolves in Yellowstone, park officials say. |
| Entire packs of grey wolves have also been plucked from the Canadian outback and released in Yellowstone Park. |
| Other beneficial changes have been documented since wolf reintroduction into Yellowstone. |
| We topped a hill, and another, until we were on a steep north-facing slope that dropped off to the Yellowstone River. |
| This is the animal that's been reintroduced into Yellowstone, as well as a lot of other places. |
| A final series of surrenders followed as hungry Lakota bands capitulated at military posts along the upper Missouri and Yellowstone. |
