Facing the apse, you should explore the sculptures on the capitals on the right. There you'll see the hares in different positions. I recommend that you look at the other accompanying representations, as their meanings also depend on the meaning of the rest of the group. The hare pursued by the dog could be interpreted, not only as a typical hunting scene, but also as virtue pursuing vice, as you rightly point out. This is the surprising thing about this Romanesque sculpture, which often lends itself to multiple interpretations.