See how big and plump your cats are? They remind me of the cat movie "Garfield." I don't think they will be able to chase any mice if they see any. Arya looks too clean to do that. Luna, on the other hand, will definitely handle it very well.

I've lived with a cat, and I actually saw the labor pains cats go through. It was like seeing a human being going through labor. She kept crying throughout until she delivered successfully. So, sorry, Luna jr lost her mum..