A "mouse's nest" is a term used to refer to a small shelter where mice reside and breed. There are several other synonyms for this term such as a mouse burrow, mouse den, mouse hole, and mouse nestling. Each term refers to the same living quarters of the rodents and their offspring. Their nests are typically made of shredded materials like paper, leaves, and other organic matter. Mice are known to build their nests in warm and dry places, often close to a source of food and water. These small creatures are adaptable and can make their homes in all kinds of environments such as farms, fields, and even in urban areas.