I panicked for a minute because I thought it was a leopard slug and I have several of them, but now I think it's a three-banded garden slug? They can still get big, though not as big as the leopard slug so whew
Though if some people here can confirm (or infirm) my guess on the species, it'd be cool, Radis may be hibernating but I don't want a dozen of huge slugs they won't fit jhgffghjk