Not that we’re counting, but bonobos and fruit bats do it, in addition to us. Whatever was the Creator thinking!?!
A Little Fellatio Goes a Long Way
By Cassandra Brooks
ScienceNOW Daily News
30 October 2009
Oral sex is surprisingly rare in the animal kingdom. Humans do it, of course. As do bonobos, our close relatives. But now researchers have observed the practice for the first time in a non-primate. During intercourse, female short-nosed fruit bats lick the genitals of their partner, a possible ploy to increase copulation time. The discovery suggests there may be a biological advantage to fellatio.
The article mentions three reasons why they perform oral sex:
1. It has to do with sperm survival.
2. It means the penis is cleaner, and so presumably the likelihood of a healthy pregnancy is higher.
3. It’s fun.
I’m not sure the last is supposed to mean it has survival value.