Why do baby mice lose their fur?

Baby mice, like most mammals, don't lose their fur. They are born with a fine, soft coat of fur called lanugo.

The lanugo is often a different color than the adult fur and helps the baby mice stay warm and regulate their body temperature. As the baby mice grow, their lanugo is replaced with adult fur.

This process is called molting and is a natural part of development.

Here are some reasons why a baby mouse might appear to have lost fur:

* Stress: Extreme stress or illness can lead to hair loss in mice.

* Parasites: Mites, fleas, or other parasites can cause itching and hair loss.

* Skin conditions: Certain skin infections or allergies can lead to hair loss.

* Dietary deficiencies: A lack of certain nutrients can affect fur growth.

If you observe a baby mouse with hair loss, it's best to consult a veterinarian to determine the underlying cause.