Assertion: pit viper's fang | /r/HasProperty | modified teeth
Facets:
Source sentences:
text: Like all members of its taxonomic family, it has hypodermic-needlelike fangs -- actually modified teeth -- that flick forward, into a biting position, when the snake opens its mouth, and that fold backward, against the roof of the mouth, when the snake closes its mouth.
text: Like all members of its taxonomic family, it has hypodermic-needlelike fangs -- actually modified teeth -- that flick forward, into a biting position, when the snake opens its mouth, and that fold backward, against the roof of the mouth, when the snake closes its mouth.