phys.org
These bats use their penis as an 'arm' during sex but not for penetration
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 is the first time non-penetrative sex has been documented in a mammal.