My husband and I are looking for a sliding glass dog door insert for our GSD. He's about a year old, 90ish lbs. We've bought a couple used "large" ones... but they don't seem big enough? I'm guessing the door needs to be set up higher within the frame so he doesn't need to crouch to get through. We're currently not using one because I can't seem to figure out the right size... Anyone have luck?
Also, here's Porter in all his majestic glory
Also, here's Porter in all his majestic glory