That's a little hard to tell, I don't know if it's because the photos are blurry and their tails curl upwards. Is there any way you can get clearer photos or at least have their tails straight out? Usually letting them walk on something like a ruler lets them walk forward with their tails out.
Its hard for me because they are a bit blurry, but I am going to say first is male and second is maybe a female? I would ask a few more people or try to get less blurry photos if possible though.