Dr Fritz Kahn, The life of man - Das Leben des Menschen III, Stuttgart 1927. Dr. Fritz Kahn (1888–1968) was a Berlin based gynaecologist and popular science writer who visualized the structure and function of the human body in a very unique way.
Wild animals will be our friends in paradise!..... "In that day I will make a covenant for them with the wild animals of the field. . . And I will make them lie down in security." (Hosea 2:18) Visit jw.org