Vampire Bats That Socialize Together Have a Similar Microbiome

Much like us, vampire bats take their social circles pretty seriously. But instead of hanging out on the couch or catching up over a beer, these mammals are more likely to bunch up to stay warm or nibble at each other's fur as a form of social grooming. In rare cases, they'll even share a meal — though, in appropriately gruesome fashion, this involves regurgitating blood into each other's mouths.