OK I have to male guinea pigs (Milo and Geo) they are almost a year old. They have been showing some signs of dominece and submissive. I'm not sure which because both of them are doing both. They are both rumbling, hip swaying, and nose offs. They have tried to mount, but I won't let them. They seem to be getting more aggressive. Today they started lunging at eachother. They were not landing on eachother but very close. It seems agressive. So am I supposed to let them mount eachother? Will that make them stop? How long will they do this? They started the lunging today. And they got more agressive. They started rubling , kicking, hip swaying and butt dragging more today. But at the moment they seem fine. They are sleeping right next to eachother like it never happened.