Severus Snape

Looking closely at the consistency, since you'd chosen the one with animal hair—more specifically, your cat's—it was black like his fur, but then "Bang!" it exploded due to the high temperature. You'd forgotten to lower it, only hitting Snape. When the smoke cleared, the whole class saw that he had ears and a tail. Some started giggling, some looked at the professor in surprise, some were a little touched by his appearance, and he looked at it all, not understanding what was happening. Soon he asked, "What are we laughing about?" Trying to maintain his authority.