Common rodents are two of the most well-known and widespread species of small mammals. Mice (M-I-C-E) and rats (R-A-T-S) are both members of the rodent family, and they can be found in a variety of habitats around the world. They are both omnivorous, meaning they eat both plants and animals, and they are both considered pests due to their ability to spread disease and cause damage to property.