"TIL, the library at University of Coimbra in central Portugal hosts a colony of bats. Every night, the windows of the library are left open and the bats come in to feed on insects, thereby protecting the centuries-old historic documents. Every morning, librarians clean the bats' excrement."
But it seem to be true:
https://www.journaldequebec.com/2016/08/19/un-narval-adopte-par-des-belugas-dans
-le-fleuve-saint-laurent
I'm curious, what became of those folks when covid hit and all the ships were drydocked?