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8 causes of sudden weight loss in dogs

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Posted on May 28 2018

It can be a sign of serious medical problems and should be reported to the veterinarian. This weight loss in dogs can be caused by:
  • Diabetes
  • Had
  • Liver disease
  • Addison's disease
  • Thyroid problems
  • Oral lesions
  • Dental problems
  • The pregnancy

When a dog is losing weight, it burns more calories than it consumes. If your dog loses more than 10% of its total weight, this should be a cause for concern.



1. Diabetes

Diabetes is caused by insulin deficiency or the inability of the body to absorb blood sugar.

Diabetes will cause the dog to have an increased appetite, but despite this, it will still lose a lot of weight.

Older and overweight dogs are more likely to develop diabetes - however, diabetes can be a genetic disease.

2. The lonely

A dog with parasites can lose weight. Dogs with tapeworms are particularly exposed to weight loss. The tapeworm resides in the dog's intestine and feeds on the food consumed by the dog - consequently, the dog is deprived of essential nutrients and will get thinner.

3. Hepatic disease

The liver processes the sugars and carbohydrates that the body needs - if the dog has liver disease, the liver will not be able to provide these essential nutrients. The body will consume deposits of fat or muscle tissue.

The dog will also show symptoms such as frequent urination, abdominal pain, jaundice, pale stools and orange urine.

A change in diet is important to control liver disease. If the disease is caused by toxins, these must be removed from the dog's environment. The veterinarian can also prescribe additional medication.

4. Addison's disease

Addison's disease is an adrenal insufficiency. The dog has a deficit of steroid hormones and will be signaled by vomiting, diarrhea, fatigue, low blood pressure or fever.

The pet will also lose weight.

5. Thyroid problems

Thyroid problems can lead to a hormonal imbalance and an acceleration of the metabolism. In this case, the dog will lose weight. Thyroid problems can be managed, but they need to be detected for the first time.

6. Oral lesions

If a dog has mouth injuries, the feeding will be painful, so he will refrain from eating. Go to the vet to detect any injuries or injuries that are present in the mouth of the dog's throat.

7. Dental problems

If your pet has a dental abscess that will stop eating. The veterinarian will administer antibiotics and determine if the tooth should be removed.

8. Pregnancy

A pregnant dog can lose weight in the first stage of pregnancy, since it lacks appetite due to nausea. This is not cause for concern, since the dog will soon regain the weight.

Sudden weight loss is often accompanied by other symptoms such as lack of muscle function, dull hair, dry skin, diarrhea, vomiting, lethargy or depression.

Weight loss may be due to a lack of appetite that can be caused by anxiety.

Other causes of weight loss can include neuromuscular diseases, poor digestion, cancer or heart disease.

The treatment depends on the cause of the weight loss. In some cases, the prescription diet is recommended.

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