:( I have female mini Dachund and she is pregnant and I was womdering what would I do if the pups got stuck or come out side ways. What materials do I use? And also should I keep her separated from the other two male dogs?

Find her a quiet spot that only she's allowed to go to, my suggestion would be to have a vet check her and keep an eye on her condition, he'll be able to tell you more, then have her spayed to prevent further litters and further complications.