Yes, that's the time they are usually introduced to the male for breeding.
It will stop bleeding after a while or it will not bleed at all
No, they get pregnant about 3or4 days into the bleed
If the female is trying to get pregnant with a male dog then it will go on the males back but if the female dog is going on the males back while pregnant then it may means that they wanted to have another baby.
Yes, any other time she can not get pregnant. I have never before heard of dogs getting pregnant while they were not in heat.
NO
By mating with a male dog.
She is in heat
A male dog impregnates a female dog through mating, during which the male dog's sperm is transferred into the female's reproductive tract. If the sperm fertilizes the female's eggs, she may become pregnant and eventually give birth to puppies.
No
Sometimes.
doggy style. How did you think they do it?
Yes.