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For questions related to the biology of extra-terrestrial organisms. This tag implies the use of the science-fiction tag. Use the science-based or hard-science tags to impose greater scientific restrictions (see warning in tag wiki). The goal of this tag is to answer the question using known science.

6 votes

Anatomically correct Arachne

The top answer on here uses convergent evolution as an explanation for why a giant spider would develop a semi-humanoid appearance, but I'd like to suggest an alternative model: mimicry. Spiders are a …
Montefeltro's user avatar