Himalayan field rat is a specific species of rat found in the mountainous regions of the Himalayas. This rat is also known as the Himalayan field mouse, brown mountain rat, or the musk shrew. It is generally a small-sized rat with brownish-grey fur, and the base of its tail is usually lighter in color than the rest of the body. The Himalayan field rat is known to live in groups, which helps them defend themselves against predators. They are mostly active at night, and their diet consists of seeds, fruits, and sometimes insects. While they are not a popular pet, they are an essential part of the ecosystem and contribute to its ecological balance.