We got my daughter a pet shop piggy about 7 weeks ago, who has given birth 2 weeks ago to 2 very cute little babies however one is a male ad has had a sudden surge of hormones and is constantly mounting his mummy and sister. he is making a funny purring noise and alsmost vibrating when he goes near either of them, is this normal ? or does he need to be seperated ? is 2 weeks to young to leave mum ? mum is getting very grumpy with him, he is being a typical male as i he is not giving in and chases the girls around the cage tut tut naughty little fella rolleyes