Yes--any fiber will do. I've used psyllium mixed with a little yogurt when Luca needs a little "push." Pumpkin does the same. So would a handful of green beans. Or a rabbit served with the fur. Any fiber will hold moisture in the stool and help add bulk. That's the issue with a raw diet---the meat is almost entirely digested; there's nothing left to pass as poop.Quote: Tracy, perhaps adding a little bit of psyllium might help if the pup is indeed constipated?