Dietary indiscretion: This means your dog has eaten something it shouldn't have, such as table scraps, garbage, or foreign objects. This is a common cause of vomiting and diarrhea in dogs.
Food allergies: Some dogs may have an allergic reaction to certain ingredients in their food, which can cause vomiting and diarrhea. Common allergens in dogs include beef, chicken, dairy products, and wheat.
Infectious diseases: There are many infectious diseases that can cause vomiting and diarrhea in dogs, such as parvovirus, distemper, and coronavirus. These diseases can also cause other symptoms, such as fever, lethargy, and respiratory problems.
Intestinal parasites: Intestinal parasites, such as roundworms, hookworms, and whipworms, can cause vomiting and diarrhea in dogs. They can also cause other symptoms, such as weight loss, abdominal pain, and itching around the anus.
Stress: Stress can cause a variety of symptoms in dogs, including vomiting and diarrhea. Stressful events can include changes in routine, travel, loud noises, or other situations that make your dog feel anxious or afraid.
Underlying medical conditions: Vomiting and diarrhea can also be symptoms of underlying medical conditions, such as pancreatitis, liver disease, and kidney disease. These conditions can also cause other symptoms, such as abdominal pain, weight loss, and changes in appetite.
If your Westie is vomiting and has diarrhea, it's important to take them to the vet as soon as possible for evaluation. The vet will be able to determine the cause of the problem and recommend the best treatment.