Scientists have solved the mystery of one of the animal kingdom's most disproportionately large penises thanks to a Dutch retiree recording bat sex in a church attic. The serotine bat does not use its ...

Little is known about the mating habits of the serotine bat (Eptesicus serotinus), but the males of the species boast unusually large penises—much larger than the vaginas of the females. The purpose ...

Mammals usually mate via penetrative sex, but researchers report November 20 in the journal Current Biology that a species of bat, the serotine bat, (Eptesicus serotinus) mates without penetration.

It looks like flying isn’t the only unusual thing that bats can do compared to other mammals. New research has found a bat species whose males use their large penises like an arm during sex. Rather ...