Guinea pigs are one of the most popular types of rodents and are a favorite of many pet lovers due to their cute appearance and friendly personality. There are many different types of guinea pigs, each with their own unique characteristics and traits. Below are some of the most well-known types of guinea pigs. Smooth-haired guinea pigs Smooth-haired guinea pigs are one of the most common types of guinea pigs. They have smooth, short fur and a body length of around 20 to 25 cm. This type of guinea pig comes in a variety of colors and color combinations, including white, black, brown, beige and gray. Teddy guinea pigs Teddy guinea pigs have a short, curly coat that looks soft and fluffy. This type of guinea pig has a body length of about 20 to 25 cm and comes in different colors and color combinations, including black, white, gray, brown and beige.