Do you believe in Indian superstitions???

[rameshxavier]

Can anybody tell me from where this superstitious came? Do you believe in Indian superstitions. If yes then to what extent. Sometime I also behave like superstitious on some situations.
There are couples of which I know:

- bad luck if black cat crosses your path
- good luck if black dog crosses your path
- something bad happen if dog cry
- good luck if you go out for new work or exam after eating curd
- bad omen if someone sneezes right before you are about to start or do something
- if your eye lid pulsates, it can be a sign of upcoming good or bad luck depending on whether it is your left or right eye.
and many-many more.....

Do you have any story/situation that proves or disproves above statements?