The term 'long-tailed rodent' can be summarized by the three letter word 'RAT'. Rats are small mammals that belong to the genus Rattus and the subfamily Murinae. They have long tails, pointed snouts, and small ears. Rats are omnivorous, meaning they eat both plants and animals, and are found in many parts of the world. They are often considered pests due to their ability to spread disease and damage crops.