The rabbit was making him nervous, and his mongoose twitchy; it was up on its hind legs, tail outstretched for balance, frozen in full alert. Thankfully, as soon as it became clear that Professor Wentz had a lion Patronus, the rabbit loped over to join the rest of the pack in awed investigation.
"Do you have to teach classes today?" William asked rhetorically in an undertone. "Because the giant lion could be a problem."