As dogs age, changes occur in the way their bodies function, so it makes sense that what they eat also might need to change. The following list of health issues might be more common in aging pets.
Decreased Immune System Function
Throughout a dog’s life, a process called peroxidation occurs. Peroxidation is a normal process that the body uses to destroy cells that outlive their usefulness and to kill germs, parasites, etc. This process, however, also can destroy or damage healthy cells. As your dog ages, the damage caused by peroxidation accumulates, which, in turn, increases the risk of certain problems, such as infections.
Antioxidants are naturally occurring nutrients that help maintain overall health by neutralizing the peroxidation process of cellular molecules. Some antioxidants, such as vitamin E, beta-carotene, and lutein, are naturally occurring nutrients.
Recent research sponsored by The IAMS™ Company found that dogs fed a diet rich in antioxidants such as vitamin E, lutein, or beta-carotene had improved immune responses and vaccine recognition. This might be especially important in senior dog care; IAMS research has found that as dogs age, immune responses can decrease.
More Frequent Intestinal Problems
Older dogs might have higher numbers of unfavorable bacteria and lower numbers of beneficial bacteria in their intestines, which can result in clinical signs of gastrointestinal problems (e.g., diarrhea).
Feeding a diet containing fructooligosaccharides (FOS), a unique fiber source that helps nutritionally maintain healthy intestinal bacterial populations, promotes growth of beneficial bacteria. Beet pulp, a moderably fermentable fiber source, also helps maintain intestinal health by providing energy for the cells lining the intestine and promoting small, firm stools.
Different dogs show signs of aging at different times, and much of this variation is associated with size. Larger dogs generally appear 'old' sooner than smaller dogs. The table below lists the age at which various groups of dogs should be transitioned to senior foods, such as IAMS™ ProActive Health™ Senior Plus.
| Weight Range | Age to Begin Transition |
|---|---|
| More than 90 lbs | 5 years |
| 51 to 90 lbs | 6 years |
| 21 to 50 lbs | 7 years |
| Up to 20 lbs | 7 years |
Even if a pet food is formulated to provide all of the essential nutrients required by a dog, it is of little value if the animal will not eat it. Quality pet foods are carefully formulated not only to be highly nutritious but also to be highly palatable.
Highly palatable dog food recipes contain various ingredients and raw materials, including palatants. Palatants help improve the smell, flavor, and texture of your dog’s food. Examples of palatants include fat, salt, proteins, yeasts, and other flavors that are added to make food taste better. Dry foods usually need extra palatants to make them more pleasant and appealing.
Palatability is a term used to describe how well a dog likes the taste, smell, and texture of a food. A premium dog-food manufacturer spends a considerable amount of time conducting controlled feeding studies to determine the right combination of ingredients and processing techniques to produce a nutritious, palatable food.
There are two ways to test and measure the palatability of a dog food:
First Bite: The first palatability test is called the “first bite” preference. This measures the dog's first impression of a food's aroma and appearance.
Total Volume: Because the novelty of a new diet can cause highs and lows in first-bite tests, a second test is conducted called “total volume” measurement. Total volume determines the staying power or ability of a diet to maintain the animal's interest over time. This is the dog’s overall choice of a food based on taste, texture, and nutrition for the entire test period.
Dogs can become picky eaters for a variety of reasons. Some of the reasons why dogs can become picky eaters include:
In comparison to humans, dogs have significantly more smell sensors than taste receptors. This implies that foods with stronger aromas tend to appeal to dogs more. While scent is crucial, less odorous meals like dry kibble can also improve your dog’s food palatability. A dog’s taste buds are hard-wired to sense the presence of fats as well as salt (but not necessarily salt flavor). Fat is frequently added to kibble to improve flavor and palatability without making the food stinky.
While taste and scent are some of the primary ways a dog decides if something is pleasant, palatability can also be influenced by a wide range of factors, such as the dog’s unique preferences and even the owner’s preference for meals and feeding times.
To make a dog eat food, you need to:
Everybody in the household needs to accept and follow the pet’s feeding plan from the beginning. You should be consistent and rigorously adhere to your dog's diet. If you decide to give your dog leftovers, choose to combine nutritious foods with kibble.
Offering your dog table scraps often promotes begging and throws off your pet’s diet. It can also lead to several health issues, including diarrhea and pancreatitis. Although human food is far more palatable, it is less healthy than canned or dry dog food.
Puppies need to be fed two to three times a day, or as your vet may prescribe. As they get older, you can gradually increase the serving size while offering meals just once or twice a week. Additionally, you must add some variety and deliver equal servings.

In order to obtain and interpret accurate results, palatability studies must be performed by experienced animal technicians and the data analyzed by research nutritionists. Feeding studies are conducted by offering an animal two bowls of food at the same time. Each bowl contains a different diet that has been carefully weighed and recorded.
The technician observes which food the dog chooses to eat first, and then records that as the first-bite preference. After a specific time period, bowls are removed, and any remaining food is weighed and recorded. Diets also are switched from left to right each day of the study to ensure that dogs are not eating one diet simply out of habit.
The total-volume measurement is determined by calculating the difference between the beginning and ending weights of each food. This procedure is repeated using the same two diets with the same group of dogs for five days. At the end of the five-day study, all observations and data are compiled and analyzed to determine the overall palatability of each diet.
Here is a quick look at some flavors that can appeal to your pet.
Meaty Flavor
Animal Fats
Gravy or Stews
Dogs are attracted by not only the taste of a food, but also to its sight, aroma, and texture. Dogs are particularly interested in the smell of food.
If you are wondering how to increase palatability of dog food, here are a few tips that might help.
Whether your pooch prefers dry or wet dog food, remember that the choice of protein is extremely essential. The most palatable dog foods are ones that are available in different meaty flavors such as lamb, beef, and chicken.
By adding fats, salts, and other additives, dry dog foods are made more palatable. Additionally, fats contribute a softer taste to the food which dogs tend to enjoy. In fact, canines find fats to be tasty and will actively seek this flavor in their meals. While the aim is to serve highly palatable dog food to your pet, do be sure to check the right amount of fat content with the veterinarian./p>
Another strategy for improving the taste of food is to add food additives. These can be actual meats that the dog owner adds to the dish such as boiled turkey or any flavored store-bought gravies.
Since many supplements aim to increase the nutritional value of food, they may include ingredients that are disliked by dogs. Try introducing liquid or soft treats to make dog food more palatable. There are also certain supplements which are tasty by nature. These can be used to enhance the flavor of dog food while maintaining nutritional value.
Liquid digest is simply protein that is enzymatically broken down into amino acids, which are the building blocks of protein. The enzymatic process reduces large protein pieces to smaller protein pieces and free amino acids. By adding small amounts of acid, the enzymatic or digestive reaction is stopped, and a stable liquid ingredient is produced. After a dry-food formula is cooked, formed into kibbles, and dried, the liquid digest is sprayed evenly on the outside of the dry kibbles. This is called “enrobing.” Not only does the liquid digest make the food highly palatable, but it also adds to the overall digestibility of the food.
Yes. We use liquid digest made from chicken to enhance the palatability of dry foods and to contribute to the nutritional value of the diet. Some pet foods include flavor enhancers, such as onion powder, which simply mask the aroma and taste of the ingredients and provide no nutritional benefits to the animal.