We found a cat and we think it is preagnant.But, it did belong to someone previously and they moved away and left it. So, we have been keeping the cat inside and the previous owner had her outside. We have been keeping her for about a week now. We do not know any of her habbits so we really can't tell anything about her. We are wondering how to tell if she is preanant? Can you tell if the have been spayded ?