Obesity in Dogs
Reprinted from Purina.com
Obesity is the number one nutritional disorder among dogs. Studies suggest that
approximately 25 percent of the dogs presented to veterinary clinics are
overweight. This extra weight puts pets at risk for certain health problems
involving the cardiovascular, respiratory and skeletal systems.
Knowing how to recognize the signs of obesity and take corrective action is
important. But more important is knowing how to keep pets in good body condition
to start, thus avoiding the development of obesity in the first place.
Animals with an excessive accumulation of body fat to the point of being 20% or
more over ideal body weight are considered obese. Weight gain occurs when
animals consume more calories than they use. This gain may be slow and gradual
or occur rapidly depending on the size of the difference between energy intake
and energy use.
The causes of obesity generally fall into three categories: inappropriate diet,
genetic predisposition and hormonal disorders.
Diet
Although this category is labelled diet, obesity is more accurately attributed
to inappropriate feeding and exercising of the pet. As stated above, weight gain
is a result of eating more calories than the pet uses. When calorie intake
equals calorie expenditure, the animal will maintain its body weight. If intake
exceeds output, the animal will gain weight. As a result, there are two ways to
impact the animal's weight. The first is to feed fewer calories and the second
is to increase the number of calories the pet uses by increasing the amount of
exercise the pet gets. This means reducing the amount of food the animal
receives and increasing the time spent walking or playing with the pet.
Genetic Predisposition
Certain breeds seem to be more susceptible to obesity than others including
beagles, basset hounds, dachshunds and Labrador retrievers. While some breeds of
dog may gain more easily, it does not mean an animal must become overweight.
Maintaining a healthy body weight requires more careful attention to the amount
of food and exercise the pet receives.
Hormonal Disorders
Diseases which impact hormone balances in pets may contribute to the development
of obesity. These include thyroid or pituitary gland dysfunction.
Castration and spaying also alter the hormonal balance of pets, sometimes
causing reduced activity and changes in metabolism. These factors can contribute
to obesity and increase the need for carefully controlling food intake and
increasing exercise in neutered pets.
How to Recognize Obesity
A good method for evaluating the body condition of dogs and cats calls for
observing and feeling the animal's body. By using the pictures and word
descriptions in the diagram at the end of this section, the pet's body condition
can be determined. This system is most useful if assessments are repeated
periodically. This allows the pet owner to continually adjust the amount of food
they serve and the amount of exercise the pet receives to maintain the dog in
good body condition. A veterinarian can provide assistance in determining a
given pet's exact body condition.
Weight Control Guidelines
Preventing excessive weight gain is the best approach to weight control in pets.
It is much more difficult to achieve weight loss once the animal has gained the
extra pounds. For those pets at risk of becoming overweight or for those animals
already carrying extra pounds, one or more of the following guidelines apply:
1 Reduce or eliminate table scraps and treats. These are often
high in fat and calories which contribute to excessive intake.
2 Reduce the amount of the current complete and balanced pet food. It
is best to measure the amount of food the animal receives. This helps keep the
serving size consistent and prevents the natural tendency to pour a little extra
in the bowl.
3 Increase the amount of exercise the pet receives. This can simply
mean walking the dog or playing catch in the backyard more often.
4 Consider switching to a low-calorie pet food. These products are
typically lower in fat and higher in fibre. This allows the owner to continue to
serve a nice-sized portion while reducing the number of calories the pet
actually receives.
5 Consult a veterinarian before beginning any weight reduction program.
The veterinarian can design a weight loss program for the individual pet and
help identify specific problems and suggest alternatives along the way. It is
also helpful to have the pet weighed periodically to track progress.