1. Wild Animal SanctuaryKeenesburg The Wild Animal Sanctuary is a 789-acre animal sanctuary located near Keenesburg, Colorado, United States. The sanctuary specializes in rescuing and caring for large predators which are being ill-treated, for which their owners can no longer care, or which might otherwise be euthanized. It is a 501 nonprofit organization and a state and federally licensed zoological facility. Created in 1980, The Wild Animal Sanctuary is situated on grassland northeast of Denver, and has helped over 1,000 animals since it first opened. By early 2018, home to more than 460 animals, the group announced the purchase of a major addition, a 9,004-acre ranch near Springfield, Colorado. From Wikipedia, the free encyclopedia.