- Harvest mice: Harvest mice are among the smallest rodents in the world, with some species measuring less than 2 inches long. These tiny rodents are found in Europe, Asia, and North Africa, and they typically live in fields, grasslands, and hedgerows. They feed on seeds, grains, and fruits.
- Dwarf hamsters: Dwarf hamsters are another small rodent species, with some species measuring less than 3 inches long. These rodents are found in desert regions of Central Asia, and they typically live in burrows. They feed on seeds, grains, and insects.
- Pygmy mice: Pygmy mice are a type of deer mouse that are found in North America. These rodents are typically less than 4 inches long, and they live in a variety of habitats, including forests, grasslands, and deserts. They feed on seeds, grains, and insects.