It seems people have lately been more interested in adopting females than males. We now have about 3 girls and 15 boys for adoption. Please ask friends and family who have guinea pigs or are looking for the perfect pet to get a guinea pig. They all require a friend for the best care. They are social animals and even in one cage 2 can fit happily.
In fact read this article about getting another guinea pig or about how social they are. They need a friend http://www.cavyspirit.com/sociallife.htm#Getting