It's crucial to seek immediate professional help from a veterinarian.
Here's why:
* Specialized Formula: A newborn puppy needs a specially formulated milk replacer, not regular cow's milk, which can cause serious digestive issues.
* Feeding Schedule and Technique: The proper feeding frequency, volume, and method (bottle or syringe) are critical for the puppy's survival and development. A vet can guide you on these.
* Underlying Issues: The puppy's lack of nursing from its mother could indicate health problems in the puppy or the mother. A veterinarian can diagnose and treat any underlying conditions.
Please contact your local veterinarian or an emergency animal hospital immediately. They will be able to provide the necessary care and support for this vulnerable puppy.