Why does your hamster stuff bedding in her pouch and keep it there?

Hamsters stuff bedding in their pouches primarily for nesting purposes. Here are a few reasons why they do this:

1. Comfort: Hamsters are burrowing animals, and they instinctually seek comfort and security in their sleeping areas. Stuffing bedding in their cheek pouches and carrying it to their nests helps them create a cozy and sheltered environment.

2. Insulation: Hamsters are small animals with high metabolic rates, so they require a warm environment to maintain their body temperature. The bedding material acts as an insulator, helping to keep the nest warm and comfortable for the hamster.

3. Nest Building: Hamsters are known for their elaborate nests. They carefully arrange and construct their nests using various materials, including bedding, shredded paper, and other soft items. Stuffing bedding in their pouches allows them to transport these materials to their nest-building sites.

4. Territory Marking: Hamsters have scent glands located in their pouches. When they carry bedding, they transfer their scent onto it, which helps them mark their territory and communicate with other hamsters.

5. Stress Relief: Some hamsters may also stuff bedding in their pouches as a form of stress relief or comfort behavior. This behavior is often observed when hamsters are introduced to new environments or are feeling anxious.

It's important to note that while hamsters naturally engage in this behavior, excessive pouch stuffing or hoarding of bedding can sometimes be a sign of underlying health issues or stress. If you notice significant changes in your hamster's behavior, it's always best to consult a veterinarian for proper evaluation and guidance.