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Understanding your dog's metabolism
Have you ever been told by your veterinarian that your dog needs to lose some weight? Some pet parents count the calories, cut out treats and increase exercise only to watch the scale move the wrong way. Just like in humans, a dog's metabolism can be too slow, sabotaging your weight loss efforts for your dog.
Wondering how your dog's metabolism works? Here are the basics of weight management for dogs.
The Metabolic Process
Metabolism is the body's complex process of converting food into usable energy. This process involves the interaction of the digestive system, the endocrine system, the muscles and the nervous system. Even if you are just sleeping or sitting on the couch watching TV, your body needs energy to power your ability to breathe, pump blood and digest. Did you know that 5 to 15 percent of the energy you expend every day, according to Discover Magazine, goes toward digesting the food you just ate?
The number of calories needed to power all these background functions is called the basal metabolic rate, or resting energy requirement. When you add in physical activity, the body's caloric requirement goes up. Your dog's metabolism works the same way.
Ageing and Changes to Dog Metabolism
There are many factors that can affect a dog's metabolism. As dogs age, their amount of muscle mass tends to slowly decrease. If an older dog has osteoarthritis that makes it painful for them to walk or run, then he may exercise less, which can also contribute to muscle loss. Muscles are the main driver of metabolism — healthy, strong muscles are necessary to keep up a healthy metabolic rate. If a dog isn't burning as many calories, it then makes it easier for older dogs to pack on the kilos.
While obesity doesn't specifically lower a dog's metabolism, canine obesity is a big problem. South African vets say more than half the patients they treat are overweight. The fact is... obesity is the number one health problem faced by pets today. Obesity combined with muscle loss can lead to a lowered metabolic rate that will require your vet's help to correct.
Dog metabolism can also be affected by hormonal disorders. Cushing's disease affects the pituitary and adrenal glands and causes elevated levels of the hormone cortisol, according to PetCareRx. Dogs with Cushing's disease tend to have an increased appetite and a lower metabolic rate, making it difficult to help them lose weight without treatment.
Hypothyroidism is another hormonal disorder that lowers the metabolic rate. Just like dogs with Cushing's, hypothyroid dogs tend to be overweight. Hypothyroid dogs, however, often gain weight despite having a regular or decreased appetite.
Genetics also plays a role in your dog's overall metabolic rate just as it does in humans. Dogs that are predisposed to slower metabolic rates will have a harder time burning off the calories that they intake, which means treats and table scraps can pack on serious pounds, possibly causing a host of other health concerns for your pup. Your dog's metabolic rate can simply be passed down from your dog's parent's similar to genetic diseases can. Genetics also are a factor when combined with your dog's breed. It's important to talk to your veterinarian to understand the weight level your dog should be at in order to know how to best maintain a healthy weight and metabolism.
The Role of Nutrition
Senior dogs, overweight dogs and dogs with hormonal conditions that negatively impact their metabolism can benefit greatly from tailored nutrition, including a metabolic dog food. A meal plan that is lower in calories and higher in fiber can help rev the metabolic engine. Restricting calories is important, but it's important to work with your vet find a safe, moderate change. If a dog's body thinks it is starving, it shifts into starvation mode. A body that is starving conserves energy by lowering the metabolic rate and breaking down muscle tissue for energy. This is the exact opposite of effective weight management for dogs!
It is important to work with your veterinarian to determine the daily calories that you need to feed your dog to boost their metabolism and help them lose weight. In addition to the problems associated with starvation mode, we all know how much hungry pooches can beg, surf the kitchen counter for snacks and generally drive you crazy. This is why proper nutrition (and not excess treats or human food snacks) combined with regular exercise is important to establishing a healthy metabolism in your dog.
If you have tried all of the exercise and proper portion control and your dog is still struggling to get to a healthy weight, you might talk to your vet about a therapeutic dog food specially formulated to work with your dog's metabolism to keep them at a healthy weight.
A healthy dog body weight, which can be heavily influenced by their metabolism, is one of the most important factors that determine your dog's longevity and quality of life. You can help them maintain a healthy metabolism with proper food, exercise and regular vet checkups. If you think your dog may have a sluggish metabolism, make an appointment to talk with your vet about ways to improve it. Your vet can identify any conditions that may be sabotaging your dog’s weight loss efforts and advise you on the best weight control regimen.
Dr. Sarah Wooten
Dr. Sarah Wooten graduated from UC Davis School of Veterinary Medicine in 2002. A member of the American Society of Veterinary Journalists, Dr. Wooten divides her professional time between small animal practice in Greeley, Colorado, public speaking on associate issues, leadership, and client communication, and writing. She enjoys camping with her family, skiing, SCUBA, and participating in triathlons.