In my experience, unless it says "mint', it is probably beef or chicken which gives yucky breath. One thing that bothers me is that this paste contains fluoride. They swallow the toothpaste and isn't fluoride poisonous? I am now using Virbac's C.E.T. Enzymatic toothpaste in vanilla mint which can be bought online or from vets and it does not contain fluoride, either. Hope this helps:thumbsup: