Spider-man frowned, but underneath his mask, so she couldn't see. "I'm thinking something bovine..." he said thoughtfully, trying to keep his cool. Though at least it wasn't someone who was trying to kill him. Then again, she was a thief and he was trying to save the world (so to speak) and that didn't always work out so well.
"Black Cow," he said, "That's it, right? Or was it Catwoman, I can never really remember..."