When your dog suddenly loses a significant amount of weight, this is a cause for alarm for many dog owners. While for some obese pets this may seem to be a desirable outcome, it’s still reason to get concerned. If your is losing weight without any efforts on your part – like a change of diet – this can be a sign of a serious health condition.

There are a few question you may want to ask yourself, when you are concerned about your pet’s weight loss.

  • Has your pet’s appetite changed?
  • Has your pet been ill, vomiting, diarrhea or showing other symptoms of an illness?
  • Has there been a change to your dog’s home schedule?
  • Has your dog increased their activity level, or has there been a change in their diet?

If you can’t find a clear cause and your dog is losing weight rapidly, then it is recommended you take them to a veterinarian as soon as possible.

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Medical reasons of why your dog could be losing weight

There are a few non-medical threats that could be the cause of your pet losing weight, although these often will not result in dramatic weightloss rapidly. A change in diet, activity level, a change in schedule or a new move can all contribute to your pet losing weight. These items are often not a serious concern; maybe your dog just needs to get adjusted to the changes. Old age also can contribute to some weight loss but, while a little weight loss is normal rapid weight loss should also be a concern for older dogs. It might be better to put them down, than to let them suffer – even though both decisions will be difficult.

However, if your pet has lost a significant amount of weight – more than 10% of their normal body weight – than this is a cause for concern. Rapid weight loss in dogs could be a warning signal of a more serious underlying health issue, Some of these issues include:

  • Liver disease
  • Periodontal disease
  • Kidney failure
  • Cancer
  • Diabetes
  • Chronic gastrointestinal obstruction
  • Neuromuscular disease
  • Orthopedic disease


If you have noticed your dog has rapidly lost weight, you will want to take them to a veterinarian, so they can perform tests to find out what the underlying condition is. The veterinarian will ask you when you first noticed the weight loss in your dog, as well as questions about their appetite and behavior. The veterinarian will also do a physical examine. Often they can narrow down what could be causing the weight loss, by establishing where your pet may have discomforts or abnormalities. Blood-work is also often done to rule out Lyme disease. A complete blood count is conducted along with a urine and fecal analysis. X-rays and ultrasounds are also often done to give the veterinarian a better look at what is going on inside your dog’s intestines. This can help detect obstruction in the digestive track, or stomach, as well as any unusual masses that could be cancerous.

Sometimes weight loss in your dog is not much of a concern and then it can be explained by your dog’s change of diet or routine. However, if the weight loss is more than 10% – and without an obvious explanation – this should be a warning signal to take your dog to a professional vet, in order to be diagnosed.

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 There are many reasons you may be considering switching your dog to a low-fat dog food diet. Dogs that suffer from obesity or those that are slightly older can benefit from a new low-fat dog food, but this is not something you will want to do with every dog. Fats are vital for most dogs to maintain a healthy life. If your dog however, suffers from pancreatitis or obesity a low-fat diet is highly recommended. When choosing a low-fat dog food, you want to be cautious with the type of food you buy. Most store-bought dog food is marketed as low fat, but can still contain a number of unhealthy filler ingredients, that can do more harm than good. You want to avoid dog foods that are high in carbs as this can cause some dietary issues and further complicate your dog’s health problems.



Best Low Fat Dog Foods

  • Acana Light And Fit

This dry dog food offers a high-protein content and contains many fibers. It is considered a more plant-based dog food, which uses a significant amount of chicken meat. It also contains other highly beneficial ingredients such as herring oil and chicory root. Herring oil contains high amount of omega-3 fatty acids, which can substantially boost your dog’s overall health. The chicory root is a great source of soluble dietary fiber with probiotics. This will help to improve your dog’s digestive tract.

  • Annamaet Adult Dog FoodGood-meat-is-low-fat-dog-food

This dry low-fat dog food option contains many healthy ingredients that are easy to digest. Some of the other ingredients you will find in this dog food include fish meal, menhaden oil, beetroot, rolled oats and chicken meal to name a few. This dog food is lower in protein and instead contains easy to digest carbohydrates.

  • Blue Buffalo Wilderness Healthy Weight Chicken Recipe

Blue Buffalo very good dog food, with a balance of high-quality ingredients. The Healthy Weight recipe includes ingredients, such as chicken, turkey meal, peas, dried egg, flaxseed and alfalfa meal and a list of other beneficial ingredients. This is dry dog food, which includes ingredients that are easy to digest and can help promote a healthy weight in your dog.

Switching your dog to a low-fat dog food can be ideal for dogs who are overweight or suffer from other health issues. Older dogs can also benefit from a low-fat dog food to help reduce the risk of them becoming obese. Not all dogs should switch to a low-fat diet, as many do need the proteins and healthy fats to keep their energy levels maintained, or grow to their adult size.

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