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Temperature Drop
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About twelve to twenty-four hours before your dog goes into labor, her rectal temperature will drop. A dog̵7;s normal temperature is between 100.5 and 102.5 degrees Fahrenheit. The temperature will typically lower to about 99 degrees when she is about to go into labor. This is due to a progesterone drop that occurs about one day prior to labor. If your dog fails to go into labor one day after her temperature drops, contact your veterinarian immediately.
Anorexia
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Many dogs who are approaching labor will start to refuse food. It is normal for a dog to experience a decrease in appetite during her pregnancy, but right before she is about to give birth, she will likely refuse food all together. If this anorexia occurs during the pregnancy and is not around her delivery time, contact your veterinarian, as this could be a sign of distress.
Seeking Out a Den
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Your dog will instinctively seek out an area in which to deliver her puppies. This spot is usually secluded and comfortable. You can assist her by setting up a whelping area or box, depending on her size. Place towels or blankets that can be disposed of in this area for her to lie down on. When she stays in this area, be prepared for labor.
Vomiting and Distressed Behavior
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There are three stages of labor. The first stage often includes vomiting, panting, and restlessness. Your dog may pace, whine, and seem uncomfortable. She may also follow you around and want to be near you. She may even vomit to empty her stomach. This is normal; if you are concerned, though, contact your veterinarian.
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Signs a Dog Is About to Have Puppies
It has been two long but exciting months for your pregnant dog, and labor is imminent. Although you may not know exactly when she will give birth, you may be able to determine whether she is close to bringing her puppies into the world by looking for a few signs. Not all dogs are the same, but many will display the same symptoms when they are about to give birth.