SEXUS ANIMALIS: There Is Nothing Unnatural in Nature

Tells us everything we never dreamed we wanted to know about the reproductive systems, genital organs, and sexual practices of animals, from elephants to fruit flies. We find heterosexual, lesbian, gay, and bisexual behavior, as well as monogamy, polygamy, and polyandry, not to mention a multiplicity of sex organs and their puzzle-piece interlockings. Fully illustrated in color.