Audubon Society, National Wildlife Service, Sierra Club, animal physiologist, anthropologist, biologist, conchologist, conservationist, conservator, deliverer, ecologist, entomologist, ethologist, forest ranger, game warden, helminthologist, herpetologist, ichthyologist, keeper, lifesaver, malacologist, mammalogist, ophiologist, ornithologist, preservationist, preserver, protozoologist, ranger, rescuer, safekeeper, saver, savior, zoo-ecologist, zoographer, zoologist, zoonomist, zoopathologist, zoophysicist, zootaxonomist