What is the biological advantage of expressing sadness by leaking liquid from the eye sockets (crying) and why do some animals also do that?

Question

What is the biological advantage of expressing sadness by leaking liquid from the eye sockets (crying) and why do some animals also do that?

In: 51

Answer 1

Women’s tears have a smell than tends to turn off male arousal and sometimes work as a calming agent

https://www.bbc.com/news/science-environment-12138280