Leonard, Jennifer.; Cooper, Alan (2005). Preliminary research in Yellowstone, for instance, has shown displacement of the cougar by wolves. 68 One female adjacent to the San Andres Mountains was found with a large range of 215 km2 (83 sq mi necessitated by poor prey abundance. Predation by cougars has been linked to changes in the species mix of deer in a region. "Park wolf pack kills mother cougar". C.; Breitenmoser-Würsten,.; Eizirik,.; Gentry,.; Werdelin,.; Wilting,.; Yamaguchi,.; Abramov,. 152 Lightly populated New Mexico reported an attack in 2008, the first there since 1974. Retrieved December 16, 2009. 70 Hunting or relocation of the cougar may increase aggressive encounters by disrupting territories and bringing young, transient animals into conflict with established individuals. The Puma: Mysterious American Cat. Lawrence, KS: University Press of Kansas. Tennessee State Government (Wildlife Resources Agency). Archived from the original on August 23, 2007. Barringer, Felicity (March 2, 2011).