Dallas/Fort Worth International (DFW) in Dallas-Fort Worth, TX.
Where to walk your dog:
Terminal D: There are two areas in the parking garage of Terminal D on level 1.
At the other terminals there are grassy areas which may be used, located on the lower level unsecured side at either ends of the terminals.
Map of all airports that have reported an air travel, pet related incident.
The inspiration for PetFlight.