My late daughter used to breed Guinea pigs as a teenager, and had about 7 of them that where all colours, coat variations and sizes. She had one, a Sheltie pig that was like a mini Old English sheep dog, and she required daily grooming, and her coat trimming regularly. She also had one with Rosettes in its coat hair formation, very pretty tri- coloured that was actually quite easy to keep clean as it’s coat was fairly short. Just be aware though that Male Guinea pigs do smell, especially if kept indoors near a Female, they have scent glands and regularly Mark their territory to attract the nearby females. Two baby females bought from the same reputable pet shop on the same day, who have been raised together would be best. Although having said that, a certain chain of very large pet stores tend to keep just one piggy to a cage run at a time, so buying a pair from them that had been raised together and possibly be related and of the same sex could be difficult. Likewise, two Males living together don’t always get on, and fights can break out, especially if they can smell a nearby female in season. A fresh supply of fruit and veg, plus hay is essential to their diet, the dried food alone is not enough. Yes they love to nibble grass, but just be careful not to put them on where grass has been chemically treated with fertiliser or weed killer, or where birds regularly feed and pass on flees and mites which can make a piggy quite poorly.