What can you do to make a dog come in heat?

There isn't really anything you can do but wait till she stopped. You could how ever try dog underwear which you can normally get at you pet store. It reduces the amount of blood dripped on your floors and carpets. It is best to get your dog spayed too if you are not planning on breeding her. It doesn't only stop the bleeding every half year but also reduces the chance of the animal getting cancer.