Delta Air Lines worked with the airport to create the new Service Animal Relief Area.
It's located near gate A-34 of the McNamara Terminal and has been dubbed "Central Bark" by some employees.
A "ribbon-biting" ceremony was held Tuesday at the airport in suburban Romulus.
Inside the relief area are two "porch potties," one with simulated grass and a second with real grass, and even a fake fire hydrant.
Airport Authority chief executive Thomas Naughton said that connecting passengers with service animals used to have to go outside to find a relief area on the international arrivals level.
Now, four-legged flyers have a place all their own to get some relief.