Possible Reasons:
* Mastitis: This is a painful inflammation of the mammary glands. It can cause vomiting, loss of appetite, and fever.
* Gastrointestinal issues: Infections, parasites, or other digestive problems can cause vomiting and weight loss.
* Stress: Nursing can be very stressful on a dog's body. Stress can lead to decreased appetite and potential digestive issues.
* Nutritional deficiencies: If the mother dog isn't getting enough food or nutrients, she may become malnourished.
* Underlying health conditions: Certain medical conditions like kidney or liver disease can cause these symptoms.
What to Do:
1. Contact your veterinarian immediately. They are the best source of information and will be able to diagnose the underlying cause of the vomiting and weight loss.
2. Provide plenty of fresh water. Dehydration can be a serious issue for nursing dogs.
3. Offer small, frequent meals. This can help prevent further vomiting.
4. Keep the puppies warm and comfortable. They will need extra care if their mother is unwell.
Please remember: This information is for general knowledge and should not be considered medical advice. Always consult with your veterinarian for any health concerns regarding your pet.