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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Bats have long been the odd ones out among mammals. They are the only creatures in this branch of the animal kingdom capable of ...

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

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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 ...

Bats have long been known for unusual forms of sexual reproduction, and a new study adds another surprise to the behaviors of the winged mammals. By Annie Roth A few years ago, Nicolas Fasel, a ...

Most mammals mate with penetrative sex, but one peculiar bat species with an oversize, bulbous penis seems to sweep that assumption aside. New video evidence suggests that during copulation, the male ...

(CNN) — Bats have long been the odd ones out among mammals. They are the only creatures in this branch of the animal kingdom capable of powered flight. Now researchers say they have discovered another ...