Père-Lachaise is home to a discreet population well known to regulars: around a hundred individuals of the same species, long tolerated there. What animal is this?

The answer

Around a hundred cats live at Père-Lachaise. The cemetery is also home to some forty bird species recorded over the course of naturalist observations.

This question belongs to the “Divisions and Topography” series of the Père-Lachaise quiz: ten questions, a story behind every right answer.