Warm weather can bring on additional challenges for dog owners with brachycephalic breeds like Boxers, Bulldogs, Shih Tzus, Pugs, Frenchies, and Boston terriers. Because of these pooches’ short skull shape and nose, they usually have a reduced ability to breathe in air; thus, causing them to overheat more easily than other, longer-nosed breeds. As a result, these short-nosed dogs tend to become more vulnerable to heat-related problems like heat stroke, which can be life-threatening.