I'm not an expert or breeder or anything but wanted to bump your post and to say that when you have one that weighs 2.4 lbs. you have to be extremely careful and make sure they eat and maitain their weight....otherwise they can go downhill very fast and if you suspect something isn't right with him I highly suggest you see your vet. I've heard of picky eaters before and that's ok but when they are that small you HAVE to find something they will eat and make sure they do so. Hope this helps a little and someone else will post