I'm not a lot of help on this one because Reuger isn't much of a chewer. I do give him small bully sticks. I usually buy the braided bully sticks and take them apart and just give him one part. I also found a treat at Target that I was really excitied about and Reuger loves them. They're called Breathies and their a dried chicken breast. They say on the front of the package that there's no hormones, no antibiotics, no fillers, and no byproducts. They have several kinds and the one I got is for fresh breath and healthy teeth. The package says that they can have two a day, but I only let him have one. He always comes running when I get them out! They're by Dogswell and you can check them out on
www.dogswell.com