No, but they do remain at home and not wander.
if they are not female and are not fixed
If they aren't neutered, yes.
No. However male dogs can still show interest in them even if they are spayed.
They still may have the urge after being fixed if the female is in heat, or goes into heat. Just because the male is fixed, doesn't mean he has lost the urge, or can't do it any more. All that has been removed is his nuts and sperm. Therefore, the male and female can still mate and get locked up, but can not get pregnant unless it is recently after the male has been fixed and he still has a little bit of sperm in his system.
Well the female ones do when they menstruate unless they have been fixed. So how many is impossible to say.
The female should be spayed (fixed) at about 6 months. Some believe that she should have a litter before being spayed, but the only thing that does is add more unwanted dogs to the dog pound.
Some female dogs get Pyometra, a disease of the uterus. It will make their organs fill with pus and they will rupture. Get her fixed. Also, your male dog is fixed, so it should be fine, if you notice a lot of humping, separate them if necessary.
All Female dogs can have puppies, but only if that havn't been fixed. I don;t completely understand your question but by 'may' I think you might have meant 'many'.
Yes as long as they are not fixed Such as dogs some peopel buy dipers for dogs because they have a period tho i believe it is only once a year when they are in heat
Yes, dogs love females. The reason why they fight over the female is because 2 people can't date 1. Animals can't either!
it is to show dominance over the other dog.
Even if a female dog is fixed, if she is on her period, there won't be blood, but she will still give off the nasty smell and that could possibly attract the males, yes. Sometimes though, a male dog (or MAYBE, female) just gets overexcited and, well, you know the rest :D