Overview
Around 30% of dogs seen for reproductive concerns show signs of phantom pregnancy — so if your dog is going through this, she’s not alone. It’s a surprisingly common condition, where dogs start nesting, producing milk, or mothering toys — without actually being pregnant. These changes are caused by normal hormone shifts after she’s been in heat. In most cases, there’s no need to worry — the symptoms usually settle down on their own.
Phantom pregnancy, or pseudopregnancy, usually shows up around six to eight weeks after a dog’s season. While some dogs show physical signs, many don’t. In fact, 96% of vets have seen cases with only behavioural symptoms, and 97% have seen aggression as a symptom. Some breeds — like Afghan Hounds, Beagles, Boxers, and Dachshunds — can be more likely to experience it, with up to 75% affected. Despite this, phantom pregnancy can affect any female dog, whether she’s had puppies before or not. Spaying, once symptoms have passed, is the most reliable way to prevent phantom pregnancies from happening again.
What is phantom pregnancy in dogs?
What causes phantom pregnancy in dogs?
How long does a phantom pregnancy last in dogs?
What are the signs of phantom pregnancy in dogs?
Is phantom pregnancy bad for dogs?
How can phantom pregnancy in dogs be treated?
How to prevent phantom pregnancy in dogs?
FAQs about phantom pregnancy in dogs
What do studies on phantom pregnancy in dogs say?
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Medically reviewed by Lizzie Youens, BSc(Hons) BVSc MRCVS
Published on 01/10/2021 • Reviewed on 23/07/2025