title: What does an aging chimp do when his working days are done? A journey into the realm--and the issue--of primate retirement sanctuaries.
authors.forename: Charles
authors.initials: C
authors.lastname: Siebert
mesh_terms: D000375:Aging; D000827:Animal Welfare; D000818:Animals; D000830:Animals, Laboratory; D006799:Housing, Animal; D002679:Pan troglodytes; D014481:United States