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 welfare in the United States Animal welfare in the United States Animal welfare in the United States relates to the treatment of non-human animals in fields such as agriculture, hunting, medical testing and the domestic ownership of animals. It is distinct from animal conservation. The first known animal welfare laws in North America were regulations against "Tirranny or Crueltie" toward domestic animals included in the 1641 Massachusetts Body of Liberties. Starting in the late 1820s, a number of states passed anti-cruelty statutes. Many of these exempted animals used in experiments, and only twice were they invoked on behalf of animals. The first Humane Societies and