ainawgsd:

Butterflies on Crocodilians

A number of insect species including moths, butterflies, and bees are known to tear-feed, usually on mammals and in some cases even humans. Tear-feeding on reptiles is less well documented, but in every case the insect seems to be in pursuit of nutrients and minerals—chiefly salt.

http://voices.nationalgeographic.com/2014/05/07/insects-tears-feed-science-environment-animals/