Assertion: rattlesnake's nostril | /r/HasProperty | external
Facets:
Source sentences:
text: The prairie rattlesnake has an extremely acute sense of smell, and can detect scents using both its forked tongue and its external nostrils.
text: The prairie rattlesnake has an extremely acute sense of smell, and can detect scents using both its forked tongue and its external nostrils.
text: Rattlesnakes have external nostrils lined with olfactory cells which also pick up scent, though they are mainly used for breathing.