Which nocturnal, protected mammal finds refuge in the cemetery's hollow trees and vaults?
The answer
Bats — mostly pipistrelles — settle into the cracks of monuments and the hollows of old trees. All European species are protected by law: it is partly for their sake, too, that dead trees are no longer routinely felled.
This question belongs to the “The Animals of Père-Lachaise” series of the Père-Lachaise quiz: ten questions, a story behind every right answer.