Why people keep on dreaming about snakes?

they say when you dream about snakes someone close to you is going to die. whether or not it is true, many people believe this. Its only turned up to be coincidentally true for me once. not too long ago my aunt almost lost her baby. the night before i had a dream about a snake. maybe it was just a coincidence. i dont believe this is true. i think it is silly, but its your decision to make whethern you think this has some meaning or not.... good luck!