How Do You Tell If A Dogs Milk Has Dried Up?

If you gently press/squeeze one of the teats on the female, it should produce a small droplet if she is still producing for the puppies. Eventually once the puppies are weaned and started on puppy food, she should completely dry up and return to her pre-puppy figure. :)

It may happen to the dogs. You should go to a near by pet store & by the baby formula for dogs. As well as a baby's bottle. They have those there to for puppies. Ask the worker there to explain how to make the formula , you don't want to poison them.haha(:
Hoped this helped.
                                                                      -marissa(:

Aside from weaning the puppies you need to make sure there is not another mammary gland stimulus present. If mom is licking her mammary glands excessively this will cause milk production to continue. Likewise if another dog is licking the mammary glands this will continue milk production. Monitor the mammary glands closely for swelling, colored discharge, and pain--mastitis is possible during the lactation period.

Remove the puppies from her so they wont suckle up to her