Assertion: fly | /r/CapableOf | feed on blood
Facets:
Source sentences:
text: Flies that feed on blood have special sensory structures that can detect infrared emissions, and use them to home in on their hosts, and many blood-sucking flies can detect the raised concentration of carbon dioxide that occurs near large animals.
text: While male deer flies collect pollen, female deer flies feed on blood, which they require to produce eggs.