Dog Pants After Sleeping. Dog panting immediately after giving birth to puppies is a normal and natural occurrence. I’d recommend that you ensure that her temperature is normal (normal rectal temperature is 100.5 to 102.5 degrees fahrenheit), she is eating well, has normal urine and bowel.
But this would be unlikely in a 6 year old dog. If so, the rest of your dog's body language will reflect this happy mood. Some dogs, particularly labradors and golden retrievers, are predisposed to a condition called laryngeal paralysis.