wolves and hydatid disease due to Echinococcosis granulosus tape worms. Two thirds of wolves examined now contain this pest. The eggs last 25 years in soil and can be inhaled in dust.
http://www.freerepublic.com/focus/news/3097828/posts?page=33#33
Scary.
http://en.wikipedia.org/wiki/Echinococcus_granulosus