Puppies breathe faster than adult dogs. Panting helps regulate their body temperature. It's usually normal.
Puppies Naturally Pant
During or after play, puppies will pant heavily to cool down. This is not a cause for concern.
Playing
Some distress like anxiety can cause rapid breathing. Try comforting your puppy if they seem restless.
Restless
Hot temperatures or stuffy rooms can make your puppy pant to stay cool. Provide water and shade.
Weather
Don't be alarmed if your puppy pants for 10-15 minutes after eating. The extra oxygen aids digestion.
Eating
Happy panting when excited or greeting you is perfectly normal for an energetic young pup!
Excitement
Contact your vet if rapid breathing persists over several hours, is accompanied by lethargy, or by other symptoms.
Consult Your Vet