What breeds of guinea pigs are there?

Obviously you need another to breed so put up posters asking for what you need. Maybe put an add in your local paper.

You can't breed it if there is not another animal for it to breed with.

You can't ... you must have a boy and a girl. So ... buy another, borrow one from a friend, rent one. Your choice.

If you mean how many offspring they have on average, they can have anywhere from 2-6, although there is apossibility of as many as 8, or as little as 1. The most average we've seen is 3, although...