What physical requirement makes successful venom injection less likely during a quick defensive strike by a hognose snake?

Answer

The snake usually needs to chew down slightly after an initial bite.

Due to the rear positioning of the venom-delivering teeth, the snake must maintain contact and chew slightly to ensure the venom ducts make contact with the skin, making quick injection difficult during a simple defensive nip.

What physical requirement makes successful venom injection less likely during a quick defensive strike by a hognose snake?

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