We have 2 lovely rats from a breeder who also takes in rescues. I'm on her Facebook page. Today she was advertising some rescue rats but said they were from a female pet rat who was accidentally impregnated by a wild rat. Out of pure nosiness, how would this happen? Our 2 pampered princesses would never meet a wild rat. I'm sure if they did they would just be eaten up! Anyone got any ideas? I'm so curious. I don't know the lady enough to ask and I don't want to highlight my lack of rat knowledge on Facebook!