Assertion: spider | /r/CapableOf | open the angle of the fangs
Facets:
Source sentences:
text: When a spider bites, the two parts of the chelicerae come together like a folding knife, and when making a threat display or actually preparing to bite, the spider will open the angle of the fangs with the basal portion of the chelicerae and also open the angle of the basal portion with the cephalothorax.