The term BREATH DOG can be broken down into three crossword solutions: PANTED (6 letters), GASP (4 letters), and PANT (4 letters). PANTED is a verb meaning to breathe heavily, often with an open mouth. GASP is a verb meaning to take a sudden, sharp intake of breath, usually due to shock or surprise. PANT is also a verb meaning to breathe quickly and shallowly, often due to exertion. All three words refer to the act of breathing, but in different ways.