"Uh..." Willow pauses at the question and sits down on the bed to pick one of the blood bags up. She hadn't really given it much thought, but she supposes if there's bags like this, it's probably human. She can't imagine the hamsters really wanting to deal with putting animal blood in this sort of thing.

"I'm guessing human, but... y'know..." She shrugs. "It's not like I would know."