Dogs can "turn off and on" the labor. If it's too noisy, or there are too many people, and she doesn't feel safe, she will delay her labor as long as possible. Depending on your breed, there is a certain temperature that mother dogs reach just before they have puppies. Research into your specific breed, and then regularly check her temperature, and keep a chart.
A dog can have false labor especially when you frighten it.
You can scare a dog and drive it into early labor.
sign to tell if your dogs in labor
Move the dog
yes
Not necessarily.
it gives birth
Feed the mother dog normally. She will eat when she is hungry.
When the dog stop her contractions and stop huffing and puffing and starts to relax.
said no labor unions
ONLY a Veterinarian should give oxytocin to your dog in labor. If you are doing it yourself, you could literally blow out the uterus so do NOT do it yourself, only with your Veterinarian. It is not for labor pain but to induce contractions of the uterus.
YES it is very dangerous. You should never let a dog labor more than 2 hours between pups. Your dog needs to go to a Veterinarian immediately.