Assertion: king cobra's venom | /r/HasProperty | fixed in position
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Source sentences:
text: King cobras and the 300 or so other members of the family Elapidae are known as “Proteroglyphous Snakes” – a term referring to the fact that their hollow, venom conducting teeth (fangs) are fixed in position and cannot be erected as can those of the vipers and their relatives (the Solenoglyphus Snakes).