What anatomical feature allows spitting cobras to actively propel venom?

Answer

A modified maxillary fang with an aperture on the front surface

Spitting cobras possess maxillary fangs that have an opening or aperture on the front surface, rather than at the tip, which acts like a nozzle to project the venom when surrounding muscles contract.

What anatomical feature allows spitting cobras to actively propel venom?

#Videos

Spitting cobras: the peculiar evolution of defensive venom in snakes

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