You can check out your local pet supply store, they should have a pads for when dogs go into heat (can't remember the exact name). Essentially its comes in the form of a panty that fits around the dog with changeable pads in the center.
yes you get drops of blood
Yes - get her spayed. Keeping her in the house, away from other dogs will not stop her from coming into heat but it will prevent her from getting pregnant.
Get her spayed, or keep her inside, and away from male dogs.
No, this is a myth. Turpentine is a solvent that is toxic to dogs.
You cannot have a dog spayed during her heat cycle, you must wait until she has finished her season. After this, spaying would be a very good idea and will benefit both the health of the dog and prevent more unwanted puppies being euthanised.
If it is rolling in its own mess or that of dogs it lives with, that will be hard. You will need to be very diligent about cleaning up after them. Of course, that would make life more pleasant for whoever has to mow the lawn, too. If it is rolling in feces outside it's own yard, you will have to keep it in its own yard, except when it is on a leash. And even then, you will need to maintain control over your dog. This will be easier if the dog has had obedience classes.
It is perfectly normal for an older dog to have no control over his bowel movements. To prevent mess let him/her out regularly.
Yes.
no it can not period mess is due to hormonal mess not other thing to prevent that blood use vaginal douch contoining povidine iodine
Yes, it is normal for the vulva (the outer area of the female genitals, outside the vagina, including the labia) to swell, and for blood or other fluids to drip from the vagina. When the dog is in estrus, she is fertile, so you might want to keep her indoors to prevent pregnancy. To avoid the mess and behavior problems often associated with estrus, and unwanted puppies, have your dog spayed.
People can prevent dog fighting by thinking of the importance of animals.
A dog urinates the same if she is in heat, heat does not affect her urination