1. American - The American guinea pig is the most common breed in the United States. They are typically short-haired with a smooth, glossy coat. Americans come in a wide variety of colors and patterns.
2. Abyssinian - Abyssinian guinea pigs have a distinctive rosette coat pattern, which is characterized by whorls of hair that radiate outward from the center of their backs. Abyssinians come in a variety of colors, but the most common are black, white, and red.
3. Peruvian - Peruvian guinea pigs have very long hair that can grow to be several inches in length. Their hair is typically silky and straight, and it can come in a variety of colors. Peruvians are gentle and docile, and they make good pets for children.