““Or consider a study of male marmoset monkeys, a monogamous species in which fathers are actively involved in parenting. Researchers measured T response to the ovulatory odors of unfamiliar females, and found that it depends on the male’s family status. Single males showed testosterone elevations (as well as penile ones) in response to the sexually enticing smell. But to “family” males (those pair-bonded with offspring), this same stimulus apparently had little effect—perhaps because it represented a distraction rather than an opportunity—and their T levels remained unresponsive.53 In””
![“[About gorillas] You take these fine, regal animals. How many (human) fathers have the same sense of paternity? How many human mothers are more caring? The family structure is unbelievably strong.” quote by Dian Fossey](https://sms4smile.com/quotes/img-quotes/1d4/dian-fossey-18586_animal_about-gorillas-you-take-these-fine-regal_1213656.jpg)
