I'm just curious.. a few years ago my sister got a pair of guinea pigs, she was told in the shop that she had to buy a pair as its cruel to keep a guinea pig on its own.
Fast forward a few years, one of the pigs dies. She doesn't want the remaining pig to be alone so she gets another pig, a year on the remaining pig also dies. Now she has the new pig that is on its own so she's just bought another one, this has led me to wonder.. is she going to be stuck in this guinea pig replacement cycle for ever more? 