Hope someone can give some advice. I have a red persian queen who loses weight drastically whenever she is feeding kittens. I know that it is normal and that some books even mention a weight loss average of 6 grams per kitten being fed per day! Although her appetite is good and her main food is Royal Canin, I still feel she is losing too much weight. This latest litter is small - three kittens. Last litter she had five! When she is pregnant or feeding kittens, I feed her the Royal Canin kitten food as recommended by the vet. The rest of the time she has the Royal Canin persian food. The vet insists that her weight loss is normal and her muscle development is good. He assures me I should not be worried, but I can't help worrying when my cat gets so skinny! Of course, she also loves tuna and beef mince, but eats very little of these.