champawattigress:

Conjoined Bat Twins Found in Brazilian Forest

These conjoined twin male bats were found in 2001 under a mango tree in southeastern Brazil. The person who found the already-deceased animals donated them to collections at the Federal Rural University of Rio de Janeiro. Last month, they were described in a publication by Marcelo Nogueira at the State University of Northern Rio de Janeiro.

The researchers believe these bats are newborn Artibeus bats from their physical characteristics, and also surmise they died at birth or were stillborn as their placenta is still attached.

An x-ray shows these male bats have separate heads and necks, but their spines eventually converge. They also have two similarly sized but separate hearts.