Human... Mothwing has a vague memory of hearing a kittypet or two refer to twolegs that way.

"Heroic dead," she repeats. "So this is tw--human StarClan?" Oh, fox-dung. She had worried that she wouldn't go to StarClan when she died, but she'd thought she might go wherever kittypets went, not a StarClan for a different type of animal entirely.