Zacharias watched the man carefully as he slowly ate the orange. He supposed that was one bad thing about turning into a small animal; he couldn't just chew and swallow an orange slice. No. He had to lick and nibble and get juice on his face more than he would as a human. However, he suspected one slice would be more than enough to fill his stomach for the time being. Perhaps that was a pro to being a smaller animal. Well, minus the fact that apparently his animagus's form also ate insects. That did not appeal to him at all, and he hoped he was never in a position where he actually had to eat insects.
He was the one who'd let himself out in the cold, and he'd had every intention of returning to his building and to his human form before going home. Until he was distracted by the orange slice, that is. Although he still had those plans. He made another little chattering noise, as if in response to the question, though in all honesty, he didn't know why he'd made that noise. But the orange slice was good. Maybe that'd been why.