About two weeks ago i bought two sows from the same litter. by now theyre about 7-8 weeks old (I'm not exactly sure how old they were when i got them). They're very frightened and hide most of the time I'm home, but will occasionally come out and eat if i dont make too much noise or any big movements. I try to handle them for about 15 minutes once every day or every other day where i place them in my lap with a towel over them to make it less frightening. (i dont kno whether or not this gets them used to me or if it frightens them more. ive read contrasting articles) I also give them floor time for a few hours every day (during which they mostly hide, but once again, will occasionally come out and look around). My issue is that, although they will mostly eat and sleep together, their dominance behavior has increased over the last few weeks instead of decreasing. I havent noticed much rumblestrutting or chin rasing, but one of the piggies keeps madly chasing the other and lunging for her while sometimes nipping her. The other one mostly runs away and hides but ive seen her rumblestrutting and mounting the first one on a few occasions. Their cage is on the smaller side (around 6 square feet/0,55 square metres) but until i can get a bigger cage I'm trying to make up for it with floor time. they chase each other maybe around 5 times a day (including nighttime) and this behavior isnt decreasing. Should i be worried? They have three hideys with two exits and i try to give them food and hay in two piles. What could be causing my problem?