In The Making of Late Antiquity, Peter Brown startled me with this:
The towns of the Mediterranean were small towns. For all their isolation from the way of life of the villagers, they were fragile excrescences in a spreading countryside. As in medieval Italy, "Everywhere the country thrust its tendrils into the town." Not every tendril was innocent: wild animals drifted into the towns of North Africa, making their lairs in the basements and eating the citizens.
Needless to say, I had to check out where the wild animals eating the citizens came from. An accompanying footnote cites to Tertullian's Ad Martyras (c. 197 AD):
I, of course, immediately thought of Wolfen.How often have wild beasts, both in their own woods and in the middle of cities, having escaped from their dens, devoured men!