D. Or perhaps it is only [correct to interpret as follows]: “That creeps” — all [creatures] that reproduce, render unclean. [Creatures] that do not reproduce, do not render unclean. I will exclude from this a mouse, half of which is flesh and half dirt that does not reproduce by breeding.
E. But it is logical [to argue that this is not the case as follows]: [The Torah] declared the weasel unclean and declared the mouse unclean. What is the case regarding the weasel? [The rule applies to] all that are called “weasel.” So too [regarding the] mouse [the rule applies to] all that are called “mouse.” I will include [on this basis] a mouse, half of which is flesh and half dirt.