The deficiency of Vitamin D is one of the many causes of rickets in both cats and dogs. A Niacin or Vitamin B3 deficiency can be fatal. Symptoms include your dogs tongue turning dark brown or black inflamed lips and gums no appetite seizures and bloody diarrhea.
Symptoms of Vitamin B12 Deficiency in Dogs Vitamin B12 plays an important role in helping the proper absorption of iron therefore dogs suffering from a deficiency may develop anemia. Some dogs are also known to have seizures due to the B12 deficiency. Moreover the B12 deficiency can also come with digestive problems too.
Signs of anemia in dogs are lack of energy and lethargy. Lack of muscle mass. Insufficient vitamin D levels can lead to congestive heart failure in dogs as well as an increased risk for complications due to heart disease and bone disorders such as osteomalacia softening of bones and rickets bone deformities.
They may develop problems with their skeletons or their nervous systems. Symptoms of vitamin A deficiency in dogs varies depending on their life stage. Dogs with a B12 deficiency andor anemia may have one or more of the following symptoms.