Organizations like P.P.I. set standards for P.A.T. and help ensure that visiting teams have the skills and aptitude to make a good team. P.P.I. recognizes Therapy Dogs Incorporated for P.A.T. certification and registration. Once registered with T.D.Inc., you and your pet are covered by a liability insurance policy while volunteering. Many facilities consider the P.P.I. requirements as the gold standard and have adopted them as their own. Pet Therapy Teams only need to submit their P.A.T. ID card in order to visit.