The term HAMSTER OR GERBIL is a type of RODENT, which is an animal that belongs to the order Rodentia. Hamsters and gerbils are small mammals that have long, furry tails, short legs, and large cheek pouches. They are typically kept as pets due to their docile nature and playful behavior. Hamsters and gerbils are omnivorous, meaning they eat both plants and animals, and they require a diet of fresh fruits, vegetables, and proteins.