So there is this guinea pig in the shelter that i do want but right now dont have the money. and i plan to get her. but she is 5 years old. she seems awesome and nice. but i just dont get it. while all the others guinea pigs are being adopted she is not.. i dont think its FAIR cause she might be 5 but she loves to run around cuddle and act like a 1 year old. does age really matter?