Pet rodents are small animals that are kept as pets, and two of the most popular pet rodents are hamsters and gerbils. Hamsters are small, furry rodents with short tails, and they come in a variety of colors and sizes. They are typically very friendly and make great pets for children and adults alike. Gerbils are similar to hamsters, but they have longer tails and are usually more active. Both hamsters and gerbils require regular care and attention, and can make great companions for those looking for a pet rodent.