As always, it depends. They can really get along sometimes (however this is rare), and sometimes fights can break out. I recommend getting multiple of the same gender, but if you get different genders, you should only get 1 male and 1 female, because fights can arise for many reasons between the males and females, especially when they mate. I hope this answers your question.
No, you can't. The two boys would fight over the girl. I would recommend getting the two boys neutered or you could put the two boys in one cage and two girls in another (you would have to by another girl because it's not recommended to keep guinea pigs on their own)
If you mean keep them together....yes, but I wouldn't recommend mixing sexes. The male will get both females pregnant. If you are interested in breeding (be aware, every time you breed there is a 1 in 5 chance the females will die) make sure you separate the pregnant females from the male before they give birth, as they can get pregnant again in as little as 2 hours, and back-to-back pregnancies are very hard on a guinea pig. If your male is neutered, it is okay to put them back together a month (approx, check this online) after the procedure.
Yes, in fact it's not recommended to have only one guinea pig as they are highly social. Sometimes a pairing will lead to hostility, because animals have personalities just as much as people do, but with proper introduction those sort of problems can be avoided or diminished.
No..... Rabbits tend to bully them and or harm them. You should not mix them it is not worth the risk to the guinea pig.
No... two boy guinea pigs can't live with two girl guinea pigs because one of the boy guinea pigs will get jealous when the other is making love to one of the girl guinea pigs.
Keep them with a male guinea pig. Be careful because sometime the male with harrass the female.
Your male guinea pig is trying to mate with your female guinea pig.
Yes and fast
you shoudl not put a hamster and a guinea pig in the same cage no matter what.
The male guinea pig is called a boar and the female is a sow because of their name "pig", even though they're not pigs. A male pig is a boar and a female pig is a sow, so the guinea-pigs have been named after them.
No. There must be a male and a female for the guinea pigs to have offspring.
it depends what type of guinea pig you have
yes they can see male chinchillas
Approximately 10 days.
YES and do it fast
20
A male guinea pig can impregnate a female when it's only two months old. It should be separated from its mother and sisters by six weeks.