Assertion: alligator snapping turtle | /r/CapableOf | open their mouths
Facets:
Source sentences:
text: Preferring to let food come to them, alligator snappers open their mouths and lie in wait at the bottoms of rivers and lakes.
text: Sitting quietly on the muddy river bottom, concealed by their algae covered shell, they open their mouth and wait for prey to swim by.