Guinnea pigs breed whenever they want, but i suggest not breeding them, for that is very irresponsible, and many guinnea pigs are in need of a home in a shelter. If your guinnea pig is already pregnant, the gestation period of a piggy is 59-72 days. During this time, she will need extra vitamin c in her diet.
You can't breed it if there is not another animal for it to breed with.
Well, guinea pigs live up to 5-8 years
Depends on the size of the guinea pig and it's breed.
it depends on its breed.
No you cannot.
Ok, a crested guinea pig and, I'm guessing you are referring to an abyssian guinea pig (not a cat) CAN breed. They are NOT two different species of animals. They are different BREEDS. Both are guinea pigs, so they can breed. Think of a lab (dog) and a dachshund (dog)........they, too, are different BREEDS, but the same SPECIES (dog)......so, they can also breed.
The most common breed of guinea pig is American short haired. They are easy to groom and handle.
Obviously you need another to breed so put up posters asking for what you need. Maybe put an add in your local paper.
Between 12 to 16 weeks depending on the breed.
Mop guinea pigs are not a separate breed but rather a descriptive term for long-haired guinea pigs with flowing coats. To get a mop guinea pig, look for guinea pigs with long, silky fur at reputable breeders or rescue shelters. Remember that grooming and maintenance for long-haired guinea pigs may require more attention.
You can't ... you must have a boy and a girl. So ... buy another, borrow one from a friend, rent one. Your choice.
The breed of a guinea pig doesn't really effect how easy it is to handle. It just describes their general characteristics. The only thing that a breed could do to make a guinea pig more challenging to handle would be if it was a breed like peruvian, boucle, coronet, texel, silky, or merino that have really long hair; it could be slippery, get tangled, or make it hard to see where your hands are.