Usually, people tend to cry when feel sad or glad. And I am one of the people cry because of loss. As far as I remember one time I cried when my dog died. I cried so hard because I love my dog so much. It is everything for me. My dog died after ate the oil. I don't know, It went to ate the oil from where. But it came back to die at my home. And that's one thing that made me cried.