bat fellatio Video

Tan M, Jones G, Zhu G, Ye J, Hong T, et al. (2009) Fellatio by Fruit Bats Prolongs Copulation Time. PLoS ONE 4(10): e7595. doi:10.1371/
journal.pone.0007595
Oral sex is widely used in human foreplay, but rarely documented in other animals. Fellatio has been recorded in bonobos
Pan paniscus, but even then functions largely as play behaviour among juvenile males. The short-nosed fruit bat Cynopterus
sphinx exhibits resource defence polygyny and one sexually active male often roosts with groups of females in tents made
from leaves. Female bats often lick their mates penis during dorsoventral copulation. The female lowers her head to lick the
shaft or the base of the males penis but does not lick the glans penis which has already penetrated the vagina. Males never
withdrew their penis when it was licked by the mating partner. A positive relationship exists between the length of time
that the female licked the males penis during copulation and the duration of copulation. Furthermore, mating pairs spent
significantly more time in copulation if the female licked her mates penis than if fellatio was absent. Males also show
postcopulatory genital grooming after intromission. At present, we do not know why genital licking occurs, and we present
four non-mutually exclusive hypotheses that may explain the function of fellatio in C. sphinx.