We are a small guinea pig rescue in the Asheville area of western North Carolina. We usually adopt out in pairs because guinea pigs are highly social. When guinea pigs meet as adults, the best pairing is typically a female and a male, and in that instance, we will neuter the male before adopting out.
Occasionally we will have same sex pairings, who may or may not be spayed or neutered. In that circumstance, the adopting home will sign a no-breeding contract. Less frequently we will have a singleton, almost always a female, who does not do well with other guinea pigs and prefers her own space.
Please note: We now strongly recommend that anyone adopting either two males or a male and female have a 2 x 5 C&C crate (30″ x 76″, which is about 13 square feet). Males in particular need that extra room.