SEXUS ANIMALIS: There Is Nothing Unnatural in Nature

Explores the reproductive systems, genital organs, and sexual practices of animals, from elephants to fruit flies. In the animal kingdom, 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.