Assertion: pit viper's venom | /r/CapableOf | take effect
Facets:
Source sentences:
text: One strategy tends to be used with prey that an individual is less familiar with: a snake envenomates its prey and then retracts its head, allowing their venom to take effect and later retrieving and swallowing its prey.
text: With prey that they are habituated to, their strategy for attack is to bite and hold prey in their mouths, without retracting their fangs, while the venom takes effect.
text: Unlike many vipers, they normally keep a grip on the prey until the venom takes effect, and will frequently lift the forepart of their bodies into the air while holding the animal clear of the ground until its struggles cease.
text: For venom to take effect, it must be injected into tissues or enter the bloodstream.
text: When approached, they strike very rapidly, holding on to the captured prey (small birds and rodents) until the venom takes effect.
text: Once the venom takes effect, victims black out from a drop in blood pressure, leaving them trapped and ready to be eaten -- head-first.
text: After a successful strike, during which the viper delivers a dose of venom, the snake releases its prey and waits for the venom to take effect.