About as long as it would with any other dog breed. Normally takes about 10-20 minutes.
By mating
A cat can get pregnant within 24-48 hours after mating.
The female's parts clamp down on his parts. This is exactly how canine reproduction is supposed to work. It is a much longer process than some other animals. It is not just pitbulls, by the way.
18-21 days
It depends what animal it is.
Pigs typically take around 15-20 minutes to reach climax during mating.
30 days
when he was at summer jam they demanded nobody was allowed to take pictures of pitbulls wife
After mating, a budgie will lay an egg within 14 days. This can depend on what kind of bird the budgie mated with.
how long done mating lasted with boy and girl guinea pigs
pregnancy lasts one month
It depends on the individual dog, but erected around 3 inches.