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And some blood worms have copper fangs!

• xipho 6y ago
  And various other wasps have heavy metals concentrated near the apex of their mandibles. There's also resilin, an elastic-like compound(?) that concentrates energy at certain parts of insect joins, used during jumping, or other fast movements.
  • throwanem 6y ago
    Which wasps?
    • xipho 6y ago
      https://link.springer.com/article/10.1007/s13127-020-00448-x https://link.springer.com/article/10.1007/s13127-020-00448-x See references therein for metals numerous other orders of not just insects but arthropods. "metal mandible Hymenoptera" as a search.