We have two female guinea pigs that are approximately 5 months old. Has anyone experienced their girls going into season, becoming really really grumpy with one another and also trying to mount each other? We are new-comers to piggies but did heaps of research before we bought them, but must have missed this behaviour. Is there anything we can do to lessen the effects of going into season because with having two girls, we seem to be going from one season to another - they need a referree! Any ideas?