Centennial Mountains Rock Lakes National Wildlife Refuge, state and private land, and part of a USDA Agricultural Research Station for sheep. Around 326 vascular plant species have been identified in the Centennials, an unusual plant diversity for the Yellowstone region. Grizzly bears inhabit the area, as nearly all species indigenous to the Greater Yellowstone Ecosystem are present. The north slope of the Centennials rises abruptly 3,000 feet above the Centennial Valley. Centennial Mountains The Centennial Mountains are the southernmost sub-range of the Bitterroot Range in the United States states of Idaho and Montana. The Centennial Mountains include the Western and Eastern Centennial
Animal testing and Use Committee (IACUC), which every research facility is obliged to maintain. The IACUC must ensure that alternatives, including non-animal alternatives, have been considered, that the experiments are not unnecessarily duplicative, and that pain relief is given unless it would interfere with the study. The IACUCs regulate all vertebrates in testing at institutions receiving federal funds in the USA. Although the provisions of the Animal Welfare Act do not include purpose-bred rodents and birds, these species are equally regulated under Public Health Service policies that govern the IACUCs. The Public Health Service policy oversees the Food and Drug Administration (FDA)