I am a new piggy owner and have got 2 male guinea pigs about 12 weeks old. Fred and Ginger. Fred is pushing ginger around with his head and won't let him near or into the igloo and so Ginger sits alone in the Cosy bag. When I gave them floor space today Ginger was trying to mount Fred but he was not happy. So think this is why they are not bonding. Will this settle. Do boars mount other boars.