Guinea pigs like to live with others of their species, but they should be of the same sex in order to avoid unwanted litters. The average lifespan is five to eight years. There is still some debate over whether these animals are truly considered rodents. Hamsters General Appearance. Domesticated Syrian hamsters are most commonly kept as pets. read more
More than 300 species of sciuromorph rodents live in the world, according to the Bio Kids website. These rodents include squirrels, chipmunks, prairie dogs, woodchucks and marmots. Sciuromorph rodents are omnivorous, meaning they eat both plants and animals, or they are herbivorous, eating only plants. read more