4 min read
The bag of pet food is designed to sell, not only to inform. Big pictures of roast chicken and words like natural or premium say very little about what is inside or whether it suits your animal. This guide shows how to read a label calmly, match a food to your pet and change foods without upsetting the stomach.
Start with the life stage and size
Look for a statement that the food is complete and balanced for a specific life stage, such as growth, adult maintenance or all life stages.
Puppies and kittens need more energy and specific nutrient levels. Large-breed puppies need controlled growth, so they have their own foods, and a mini adult recipe is not designed for them.
Seniors vary a lot. Some stay lean and active and do well on adult food, while others benefit from a diet with adjusted energy or joint support. Your vet can help you decide based on weight and health, not just age.
Reading the ingredient list
Ingredients are listed by weight before cooking, so fresh meat, which contains a lot of water, can appear high on the list while contributing less dry matter than it seems.
A clearly named animal protein near the top, such as chicken, salmon or lamb, is generally more informative than vague terms like meat derivatives or cereals.
Do not judge a food only by one ingredient. Grain-free is not automatically better, and a recipe full of fashionable ingredients is not automatically balanced. The statement of nutritional adequacy and the manufacturer's quality control matter more than the marketing.
Understanding the guaranteed analysis and energy
The analysis shows minimum or maximum percentages of protein, fat, fibre and moisture.
To compare dry and wet foods fairly you need to account for the water content. The energy density, shown in kilocalories per gram or per kilogram, tells you how much food provides a given amount of energy, which is why the same pet needs a different quantity of different foods.
That is also why PatiTools calculates calories first and converts to grams afterwards. Our food portion tool assumes a typical dry food of about 3.6 kcal per gram. Always check your own bag, because brands differ by a large margin.
Dry, wet, fresh and homemade
Dry food is convenient and keeps well.
Wet food contains more water, which can help cats and pets that drink little, though it is usually more expensive per calorie. Fresh or gently cooked commercial diets can be good if complete and balanced. Homemade and raw diets carry a real risk of nutritional imbalance or contamination and should only be done with the guidance of a veterinary nutritionist.
Whatever you choose, consistency and quality control matter. A modest, well-made complete food fed in the right amount usually beats an expensive food fed carelessly.
Changing food without stomach trouble
Change foods gradually over 7 to 10 days, starting with a small portion of the new food mixed into the old and increasing the share every day or two.
A sudden switch is a common cause of loose stool and vomiting. If digestive upset appears, slow the transition down, and see your vet if it persists or your pet seems unwell.
Let body condition guide the amount
Feeding guides on bags are averages and often generous.
Use them as a starting point and adjust to your pet's body condition. You should be able to feel the ribs under a thin layer of fat and see a waist from above. If weight creeps up, reduce the ration and ask your vet. Treats count too and should usually stay below about a tenth of daily calories.
For allergies, kidney, urinary or other diseases, prescription veterinary diets exist. They are formulated for a medical purpose, so do not improvise or swap them for a marketed alternative without advice.