According to Sweet Frog, they have added Dole Whip, which they say is vegan, to their offerings. For more information, see:
http://sweetfrog.com/yogurt/flavors
http://www.dolesoftserve.com/prod-info.cfm
Please note that sugar appears to be the first ingredient.
The contents of this posting, our website, and our other publications, including Vegetarian Journal, are not intended to provide personal medical advice. Medical advice should be obtained from a qualified health professional. We often depend on product and ingredient information from company statements. It is impossible to be 100% sure about a statement, info can change, people have different views, and mistakes can be made. Please use your best judgement about whether a product is suitable for you. To be sure, do further research or confirmation on your own.