Implicating multiple_arms → multi_limb
Link to implication

Reason:

Arms are also limbs.

Maybe these should all be aliased to extra_arms, extra_legs, and extra_limbs

I don't think so. Extra_ears is the only extra_* tag with more than one post, so those are hardly used.

And multiple limbs are standard for some species.
Multi-legged anthro centipede, for instance? I wouldn't say that it has extra ones.

approved