He’s having trouble breathing

A slew of respiratory issues, including allergic reactions, pneumonia, and bronchitis, might make your dog sound like he’s panting more than usual. ‘There’s panting—increased respiratory rate—but then there’s increased respiratory effort, like it’s harder for them to actually breathe,’ says Dr. Richter. ‘It can be subtle, but there’s a definitive difference.’ Talk to a vet about what’s behind your dog’s heavy breathing and what treatment options you have.