When you gain a pound of fat, your body makes seven new miles of blood vessels. This means your body must work harder to pump blood through all of these extra new vessels, which may put a strain on your heart, and may reduce oxygenation and nutrient replenishment in other tissues.
Panting is a sign that your dog is excited, hot, or both. But panting is also a warning sign. If your dog is taking a break from exercise and continues to pant heavily, this could be a sign of heatstroke â a medical emergency. Move your dog to a cool spot or indoors immediately.
Several other signs accompany excessive panting in dogs, such as cough, discomfort, heart problems, anemia, heat strokes, fainting etc. A panting puppy might be of concern, when it is a perfectly normal response to heat or exercise. A puppy is considered to be panting when the breathing rate is 10x the normal rate.