By Paula Fitzsimmons
Youâre feeding your puppy a nutritionally-balanced diet and following the directions on the label with precision. You watch as your new best friend voraciously eats his dog food, and surmise his appetite isnât the problem. Despite your best efforts, however, heâs not gaining weight as he should. Puppies grow at different rates, but if yours is below the average for his breed, there may be an issue. Anything from ineffective feeding methods to underlying diseases can cause slowed growth in puppies, says Dr. Dan Su, a clinical nutrition resident at the College of Veterinary Medicine at the University of Tennessee in Knoxville.
You may unwittingly be feeding your puppy an insufficient number of calories or a diet that lacks essential nutrients for growth. However, âmedical causes of slowed growth are more common and can include parasites, digestive issues (such as inflammatory bowel disease), a liver shunt, and diabetes, for example,â Su says.
Read on to gain insight into why some puppies are resistant to weight gain, as well as what you can do to tip the scale in their favor. Of course, run any changes you plan to make to your puppyâs diet past your veterinarian first.
For pampered pets, the inability to gain weight is rarely due to inadequate food intake, âespecially if the puppyâs appetite seems good,â says Dr. Cailin Heinze, a veterinary nutritionist at Cummings School of Veterinary Medicine at Tufts University in North Grafton, Massachusetts.
Itâs best to play it safe and bring your puppy to the vet to rule out medical causes. There could be any number of reasons behind her inability to gain weight, but intestinal parasitesâparticularly roundworms and hookwormsâare probably the most common, says Dr. Joe Bartges, professor of medicine and nutrition at the College of Veterinary Medicine at the University of Georgia in Athens.
Inflammatory bowel disease, protein losing enteropathy (any condition of the GI tract resulting in loss of protein), and hypoglycemia are examples of diseases your vet may look for, says Dr. Susan Jeffrey, a veterinarian with Truesdell Animal Hospital in Madison, Wisconsin. Or the problem may be dental-related. âIs there something painful? For example, the puppyâs teeth may not have erupted normally and may be coming into contact with the tongue.â ?
Additionally, certain foods can be too rich for some puppies and result in diarrhea. âThis isn't necessarily a food allergy, but I think some pups with developing gastrointestinal tracts can't handle certain foods,â she explains.
Is Your Puppy Getting Sufficient Calories?
If your vet has ruled out an underlying condition, itâs possible your puppy is not getting the right number of calories. Jeffrey recommends discussing your dogâs diet with a vet, and calculating the recommended daily caloric intake for the puppy, a methodology based on breed, a dogâs activity level, and reproductive status. âSpayed or neutered animals may not need as many calories as intact animals,â she says.?
Feeding a higher calorie food may be beneficial if the puppy has a poor appetite and isnât finishing the recommended portion of food, says Heinze, who is board-certified in veterinary nutrition. âBut this should only be attempted after parasites have been checked for and treated and blood work and other diagnostics have been done to rule out health issues.â
Examine Your Puppyâs Diet
Diets devoid of an essential balance of vitamins, minerals, proteins, fats, and carbohydrates may also be to blame, says Jeffrey, whose professional interests include preventative care.
âYou should be feeding your puppy a diet that is AAFCO-approved (complete and balanced) for growth, as well as choosing a diet that is appropriate for the presumed adult size,â Jeffrey explains. âFor example, large and giant breed puppies should eat a diet labeled for large breed puppies.â
Despite what you might think, diets formulated for growth arenât always high quality. âConsider changing the diet to a more well-known diet from a larger pet food company or even feed a therapeutic diet,â advises Bartges, who is board-certified in veterinary internal medicine and veterinary nutrition.
A raw food diet isnât a cure-all, either. âWhile I help people with raw food diets if that is what they want to feed, I discourage pet parents from feeding raw food diets to puppies,â he says. ?âThe margin of safety is narrow during growth?and this can be an issue not only for nutrient imbalances but also infectious disease.â
What to Avoid
You may be tempted to add a nutritional supplement to puppy food to encourage growth, but using supplements without consulting a vet can harm your canine companion. For example, âexcess calcium can increase the risk of developmental orthopedic diseases in large breed puppies; excess vitamin D can lead to toxicity,â Su says.
Another potential problem to avoid is obesity. âMany puppies that owners deem too thin are at a healthy weight and the owners are trying to make them fat because they donât have a good understanding of what a healthy puppy looks like,â Heinze says. âUnless the puppy has a known health issue, being slightly âribbyâ is generally healthier than slightly overweight, especially for large and giant breed dogs.â
Vets recommend frequent weight checks to ensure your puppy doesnât become overweight. âAnd if weight gain is faster than desired, calorie adjustments can be made before weight gain becomes excessive,â Su says.
In addition to ruling out underlying conditions and ensuring your dogâs diet is balanced and provides the appropriate number of calories, you may want to examine your feeding methods. âSome puppies need several small meals throughout the day instead of two large meals,â Jeffrey says. âFeeding small meals may help with weight gain.â
Also look for behavioral clues. âIf the puppy is having to compete to eat with other dogs in the house, the puppy should be fed separately,â she says. âNot only will this help reduce stress, it will allow the owner to determine the exact amount of food the puppy is eating.â