Crocodiles' Real Tears

Crocodilians have glands that produce tear fluid to lubricate and protect the eyes. Tearing has also been observed while they feed: a small study recorded it in five of seven caimans. This is a physiological response, not evidence of sadness or sympathy. The expression “crocodile tears,” meaning insincere sorrow, comes from an old belief that crocodiles weep while eating their prey.