hamster hiding

How to Tell if a Hamster is Pregnant? If you’re wondering how to tell if a hamster is pregnant, there are several signs and changes in behavior to look out for.

Hamsters, like many small mammals, show physical and behavioral signs when they are expecting.

Signs of a Pregnant Hamster

  • Increased Size and Weight: One of the most noticeable signs is an increase in the size and weight of your hamster. Pregnant hamsters will have a swollen belly as the pregnancy progresses.
  • Nipples Becoming More Prominent: About halfway through the pregnancy, a hamster’s nipples will become more prominent and easier to see.
  • Change in Eating Habits: Pregnant hamsters may eat more than usual to support the growing babies.
  • Nesting Behavior: Pregnant hamsters often start to build nests. They gather bedding materials and create a cozy spot in their cage.
  • Aggressiveness or Restlessness: Some pregnant hamsters may become more aggressive or restless, especially as they get closer to giving birth.
  • Reduced Activity: As the pregnancy progresses, a hamster might become less active and spend more time resting.

For more on hamster wellness, explore our detailed guides.

Confirming Pregnancy

If you observe mating behavior and note the date, you can estimate the due date since hamster pregnancies typically last 16-18 days, depending on the species.

A veterinarian can confirm pregnancy through a physical examination and palpation, and sometimes an ultrasound may be used to check for developing babies.

For a deeper understanding of hamster health, refer to Wikipedia.

Preparing for Baby Hamsters

To prepare for baby hamsters, set up the cage with a nesting area and soft bedding material, placing it in a quiet environment to reduce stress.

Ensure the pregnant hamster receives a high-quality, protein-rich diet, including small amounts of boiled egg, chicken, or mealworms, and fresh vegetables and fruits for vitamins and minerals.

Regularly monitor her health and provide additional support as needed, while minimizing handling to avoid stress.

For tips about can hamsters eat banana, check out our comprehensive articles.

Signs of Impending Birth

Signs of impending birth in a hamster include physical indicators like a noticeably swollen belly and more prominent nipples, alongside behavioral changes such as intensified nesting activities and increased restlessness with frequent changes in position.

Post-Birth Care

new born hamsters

Post-birth care for hamsters involves minimal handling of newborns for at least two weeks to prevent stress and abandonment, while observing their health to ensure proper nursing and development.

Additionally, continue providing a nutritious diet for the mother to support milk production and maintain a calm environment to reduce stress for her as she cares for her babies.

For more information on how long does hamsters live, refer to our detailed articles.


Knowing how to tell if a hamster is pregnant involves observing physical and behavioral changes.

Providing a supportive and calm environment is crucial for the health of the mother and her babies.

If in doubt, a veterinarian can confirm the pregnancy and offer advice on care.