All the bunny huggers who don't want hunters to kill wolves should think about natures methods of dealing with it.
A quote from the article:
Yellowstone officials said that during the past year, distemper, mange and wolves killing each other were the likely causes of the population decline.
Wolves often kill each other over competition for food or territory, and population density could contribute to an increase in wolf-on-wolf mortality.
This was in an area of the park where wolf density was exceptionally high.