I've long been interested in the evolution of different aspects of social behavior, a topic that I cover in my recent book called Why Dogs Hump and Bees Get Depressed. As I listened to Dr. Bondar I wondered if evolutionary biology could shed light on what some people consider to be "kinky", loosely defined as some form of unusual or unconventional sex that is considered to be abnormal (and embarrassing). I immediately thought that perhaps we really don't know what is unusual or unconventional because surveys about human sexual behavior may be replete with inaccurate reports of what people really do in bed, on couches, in telephone booths or on kitchen counters. A web search confirmed my suspicion that sex surveys may not actually tell us what people consider conventional or kinky or what their intimate lives truly are like.
You drive me batty!
It's clear that other animals aren't as inhibited as humans when they want to get it on in one way or another. After watching Dr. Bondar's talk I thought about oral sex in animals, something that I can't recall having crossed my mind even after having watched thousands of interactions in dogs, coyotes, and wolves in which a good deal of attention -- both sniffing and licking -- is paid to another individual's genital area. I wondered if we're the only animals who engage in fellatio or cunnilingus. So, I did a web search for "oral sex in nonhuman animals" and I found more than 13 million hits! Once again there are problems with the definition because different people define oral sex differently, ranging from oral-genital contact to stimulation that feels good to stimulation resulting in orgasm. Regardless, it's pretty clear that oral sex involves a mouth.