Where is the shell or Russian shell strop used in relation to a horse?

The shell or Russian shell strop is primarily used on the rump area of a horse. This tool is designed to help in grooming and maintaining the horse’s coat. The strop is typically constructed from leather and often features a rough surface that can help remove dirt and loose hair.

Using the strop on the horse's rump area is particularly effective because this region tends to accumulate dirt due to the horse lying down or rolling. Properly grooming this area helps enhance the horse's overall cleanliness and appearance. Additionally, using a strop on the rump can stimulate the skin and support the health of the coat by distributing natural oils.

In contrast, the other options do not relate to the primary use of a shell strop. Grooming the tail, mane, or hoof areas requires different tools and techniques specific to those parts of the horse. Each area has unique grooming needs, and while some tools may cross over, the shell or Russian shell strop is specifically suited for use on the horse's rump.