21st Century Travel Directional sign at Portland International Airport (PDX). Is this for pets to find relief or for travelers looking for relief from people who must bring their dogs on airplanes? 00 Facebook Twitter Email Print Reddit Pinterest LinkedIn Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Like this:Like Loading...