1. What is Natural about Sex?
ANTH 250: Issues in Anthropology
Kimberly Martin, Ph.D.

2. Bonobo Chimpanzees Pan paniscus
Walk upright more
Use sexual behaviors to comfort or to resolve conflict
Display all types of homosexual and heterosexual behaviors
Same lifelong mother-child and sibling relationships

3. Bonobo Mothers with Offspring

4. Bonobo Male Grooming Female

5. Upright, Bipedal Bonobo Carrying Sugar Cane

6. Bonobo Relaxing

7. Bonobo Female Stretching

8. Bonobo Intercourse in Missionary Position

9. Bonobo Intercourse in Missionary Position

10. Bonobo Females “GG Rubbing”

11. Bonobo Males “Rump-Rubbing”

12. Bonobo Female Masturbating

13. Bonobo Male Display