There are a variety of parasites, or worms, that your dog could be infected with.

Senior dog won't gain weight. Contents & quick navigation [ hide] why is my dog losing. Whenever one of the major organs stops functioning properly, it can play havoc with your dog’s. Your dog may also have a more serious condition such as a tumor.

Other reasons that your puppy isn’t gaining weight may include: Keep on reading to find out the most common causes for sudden weight loss in dogs and what you can do about it. Hyperthyroidism is not all that common in dogs, but thyroid disorders are more commonly seen in middle to older aged dogs.

Other symptoms dogs with hyperthyroidism. Some of the most common reasons for weight loss in older dogs include: Medical condition they suffer from an illness such as heart disease,.

Parasites hormonal imbalance difficulty breaking down food/trouble absorbing nutrients underlying. Symptoms you might notice that indicate the presence of a problem causing weight loss drooling panting, pacing bad breath difficulty or lack of interest in eating increase in. You may notice your older dog not.

If she isn’t fat, i. Various health conditions can lead to a dog losing their appetite or prevent their bodies from absorbing the nutritional value of their food. Therefore, it’s nothing to worry about as long as your senior dog is not showing a significant weight loss.

If your dog seems unusually disoriented. If your dog is eating normally, but still losing weight possible causes are: The most common among older dogs include: