Question: how much square feet does a guinea pig need?
Answer: The following guidelines are useful to determine the space needed for guinea pigs. One guinea pig: 7.5 square feet cage (minimum), but more is better; generally 30" x 36" is a good size. Two guinea pigs: 7.5 square feet (minimum), but 10.5 square feet is preferred; generally 30" x 50" is a good size.