Traffic on the way to the airport makes you late. Rushing, fearing you’ll miss your flight, you anxiously stand in endless check-in and security lines, annoyed at the delay. Your stress level increases with every passing minute. Finally clearing security, sitting to put your shoes back on, you notice something unusual across the room: an enormous harlequin Great Dane wearing a vest that says, “Pet me!” A smile breaks across your face and your blood pressure immediately drops. You say a quick hello to the dog and rub his soft ears, and the tension of the past hours melts away.