It may be nothing but I don't think the 5 month old kittens I have poop much, and it seems dry and small. They eat very good, I free feed them Iams and Kitten chow, they also get canned food Iams 2 times a day, they seem to be drink water ok, and once in a while I give them the Wiska's car milk and a few kitty treats, and some plain cooked chicken. They have all been spayed, tested, shots, treated for worms, and fleas, should I be concerned? Thanks