Vampire bats

Vampire bats are any of the three species – common vampire bat, the hairy-legged vampire bat and the white-winged bat – whose food source is blood – a dietary trait called hematophagy. They belong to subfamily Desmodontinae. They are native to central and south America.
A new study revealed that vampire bats are more likely form a long-term social bond that involve grooming each other and sharing regurgitated blood leftovers. Those that have developed social bonding with each other will rendezvous during foraging, may be to coordinate a hunt. It is possible that they can even recognize one another’s vocalizations.