I have two housecats, both of which are female. Unfortunately, they were let outside while I wasn't home and both became pregnant. One cat had her kittens 5 days ago (April 7th), the second had her's yesterday (April 11th). We let the second one out of the room she had her kittens in and she immediately started picking up the other cat's kittens to carry them to where her's were located. I stopped this from happening, fearing the worst. However, now both of the cats have carried their kittens into my livingroom, placed all 8 into a box, and the cat who had the first 4 is now laying and trying to nurse all 8 of them. Is this dangerous? Should I worry? And if so, what should I do about this?

Thanks for any and all advice.

Thanks for any and all advice.