 The words on Stitchs dog license at the shelter are part of a  resolution thanking people for their support during the making of  the movie. The words are difficult to make out, but the last part  reads, "as well as our partners at Disney MGM Studios for their  participation and support during the making of Lilo and Stitch." You  can see a close up of the end of the last few lines in the scene  where "Susan" stamps the Seal on the form.