Dead lizard

Morning I found a lizard dead in my bathroom. Since that lizard was small and young, it still lingers in my mind. What could be the cause of the death? Do they have heart attack or stroke? Did it see some frightening enemy? Could it be a suicide? If so, what could be the reason?

May be it couldn't tolerate the smell of the bathroom. I had to clear it off before it starts smelling the room.