title: Chimp care causes furrowed brows.
authors.forename: R
authors.initials: R
authors.lastname: Dalton
mesh_terms: D000827:Animal Welfare / Q000592:standards; D000818:Animals; D000830:Animals, Laboratory; D009316:National Institutes of Health (U.S.); D009516:New Mexico; D002679:Pan troglodytes; D014481:United States; D016885:United States Department of Agriculture