<P> Moose are commonly observed in the park's southwestern corner along the Bechler and Fall rivers, in the riparian zones around Yellowstone Lake, in the Soda Butte Creek, Pelican Creek, Lewis River, and Gallatin River drainages, and in the Willow Park area between Mammoth and Norris . Summer moose migrations from south and west of the park into Yellowstone have been confirmed by radio telemetry . Moose usually live to 20 years in the wild . </P> <P> Mountain goats (Oreamnos americanus) are not native in the park but were introduced into the Absaroka Range in Montana in the 1940s . They migrated into the park and breeding populations established themselves in the northwestern and northeastern regions of the park in the 1990s . As of 2008, the number of goats in and adjacent to the park is estimated to be 175--225 . This colonization of a non-native species has raised concerns about adverse effects on alpine habitats . Surveys in 2002 and 2003 suggest that ridgetop vegetation cover is lower, and barren areas along alpine ridges are more prevalent in areas with relatively high goat use . Competition with high densities of mountain goats could also negatively affect bighorn sheep, whose range overlaps with mountain goats . Mountain goats generally live 15 years in the wild . </P> <P> The mountain lion (Puma concolor), also called the cougar, is the largest member of the cat family living in Yellowstone . Mountain lions can weigh up to 200 pounds (~ 90 kg), although lions in Yellowstone are thought to range between 140 and 160 pounds (~ 65 and ~ 70 kg) for males and around 100 pounds (45 kg) for females . Two to three kittens may be born at any time of year, although most arrive in summer and fall . For reasons that are not clear, only about 50 percent of kittens survive their first year . The current population of lions in Yellowstone is estimated to be 18 - 24 animals and is thought to be increasing . Mountain lions live an average lifespan of about 12 years in the wild . </P> <P> Mountain lions were significantly reduced by predator control measures during the early 20th century . It is reported that 121 lions were removed from the park between the years 1904 and 1925 . At that time, the remaining population was estimated to be 12 individuals . Mountain lions apparently existed at very low numbers between 1925 and 1940 . Reports of lions in Yellowstone have increased steadily from 1 each year between 1930 and 1939 to about 16 each year between 1980 and 1988 . However, increases in visitor travel in Yellowstone and improvements in record keeping during this period probably contributed to this trend . </P>

Are there mountain lions in yellowstone national park