# Museum Study Skins

Part of the Mammal Study Merit Badge Digital Resource Guide: [Introduction & Overview](https://merit-badge.university/merit-badges/mammal-study/guide/index.md)

*4. Mammal Investigation Options*

> **4a.** Under the guidance of a nature center or natural history museum, make two study skins of rats or mice. Tell the uses of study skins and mounted specimens respectively.

This is one of the most specialized options in the badge. It should only be done with trained guidance, but it gives you a real look at how museum mammalogy works. Study skins are not decorations. They are research tools.

## What a Study Skin Is

A **study skin** is a carefully prepared specimen that preserves the outside of an animal for scientific study. It is usually arranged in a compact, standardized position so it can be stored efficiently in museum drawers and compared to many others.

A study skin is different from a taxidermy mount. It is made for measurement, identification, and record keeping, not for lifelike display.

## Why Scientists Use Study Skins

Study skins help scientists:

- compare size, color, fur, and body proportions
- confirm species identification
- study geographic variation
- preserve a record of where and when an animal lived
- connect specimens to skulls, tissues, parasites, or genetic samples

If a specimen was labeled well, it can still answer new scientific questions decades later.

## How Mounted Specimens Are Different

Mounted specimens are designed to look lifelike for display and education. You might see them in dioramas, classrooms, or museum exhibits. Their main purpose is interpretation for the public.

A quick comparison looks like this:

| Type | Main purpose |
|---|---|
| Study skin | Scientific comparison, measurement, storage, research |
| Mounted specimen | Display, teaching, public interpretation |

## What Your Counselor Wants to Hear

You do not need to become a museum preparator in one afternoon. Your goal is to understand why the process is done carefully and why guidance matters. Pay attention to:

- labeling
- measurements
- specimen handling
- how preparation protects useful features
- how records stay attached to the specimen

> **Safety First!**
>
> This option must be done only under the guidance required by the badge. Follow all instructions for hygiene, handling tools, protective equipment, and specimen disposal. Never try to prepare specimens on your own without trained supervision and permission.

## Official Resources

These official videos help you see the process and the scientific purpose behind it.

Video: [Skinning Your Rat (video)](https://youtu.be/m93WO9praZE?si=DG3Wt7aD9EBE-Zma)

Video: [Preparing Mammal Specimens (video)](https://www.youtube.com/watch?v=dBk9jwQBiuA)

> **Tip**
>
> Bring a notebook and write down the exact steps, tools, and labeling practices you see. Those details will help you explain the uses of study skins and mounted specimens clearly to your counselor.

If you want a field-based option instead, the next page focuses on photographing mammals in the wild and recording the conditions behind the image.

---

- Previous: [Choose Your Investigation](https://merit-badge.university/merit-badges/mammal-study/guide/req4/index.md)
- Next: [Wildlife Photography Log](https://merit-badge.university/merit-badges/mammal-study/guide/req4b/index.md)