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A strong commitment
to better nutrition

We believe
nutrition is vital

We firmly believe that the right pet nutrition is vital to pets’ living long, healthy lives. Our research, directed from the Global Pet Nutrition Center, helps make Hill’s the global leader in nutritional health care for companion animals, allowing us to provide the right formulas for precisely balanced nutrition that meets the wellness and therapeutic needs of pets worldwide.

Science for success

We continuously look for ways to improve the effectiveness of our products and are proud to be the first pet food company to apply the concept of Evidence-Based Clinical Nutrition to the development of pet food.

The best clinical decisions are made when high-quality research evidence, clinical expertise and patient values intertwine. Evidence-Based Clinical Nutrition starts with extensive nutritional research. These in-depth studies ensure that our products will provide real benefits to pets and meet the highest standards of quality and excellence expected by our customers.

Consistent with Evidence-Based Medicine used by physicians in human practice, Hill’s performs randomised, blinded and controlled clinical feeding studies. These scientific studies demonstrate the benefits of the medical and nutritional research conducted every day at the Hill’s Global Pet Nutrition Center.

Clinical trials
for pet wellness

An essential component of Evidence-Based Clinical Nutrition is the clinical trial. During these trials our products are tested by veterinarians using real patients in blinded, randomised feeding studies. Veterinarians use their clinical skills and experience to help identify each patient’s unique health condition and diagnose it properly. Then they evaluate and document the benefits of nutrition during the course of the study. By performing our own research, Hill’s develops cat and dog foods that promote pet wellness by delivering precise nutrition.

The right nutrients
in the right quantities

Guided by evidenced-based research, Hill’s formulates its complete pet foods with a precise balance of 50 nutrients to meet the specific needs of pets, based on their lifestage, lifestyle, size or special needs. Carefully avoiding too little or too much of certain nutrients is important because a wide range of common disease conditions can be made worse, or even caused by, consistently feeding a diet with an incorrect balance of nutrients. Look at the table below to see how the most important nutrients will influence your pet’s health:

too little* optimal
nutrient range
too much*
Poor growth Protein
Lean muscle & growth
Dull coat Fat
Healthy skin & coat
Weight gain
Weakness Minerals
Strong bones & teeth
Bladder stones
Fatigue Vitamins
Strong immune system
Skeletal problems
Stool problems Fibre
Healthy digestion
Stool problems
* Small Animal Clinical Nutrition, 4th and 5th Editions


Hill's believes that the right nutrition is key to a healthy, longer life for dogs and cats.
Here is an overview of the most essential nutrients:

  • Water


    Water is the most important nutrient of all and essential for life. Animals can lose almost all their fat and half their protein and still survive, but if they lose 15% of their water, it will mean death.

    The amount of water an animal should consume per day is roughly equivalent to its daily energy intake in kilocalories. This means that a healthy dog or cat would normally need around 50 ml per kg bodyweight per day; e.g., 200 ml for a 4 kg cat.

  • Carbohydrates

    The nutrients that supply us with energy are carbohydrates, proteins and fat.


    Simple carbohydrates, commonly called carbs, and starches in foods are used by the body as glucose. Carbs provide the energy needed for daily activity and vital body functions, as well as:

    • Producing heat when metabolised for energy
    • Acting as building blocks for other nutrients, such as certain amino acids, lactose, and vitamin C
    • Providing energy storage in the form of glycogen or fat
  • Proteins

    The nutrients that supply us with energy are carbohydrates, proteins and fat.


    Proteins are the essential building blocks of all tissues and organs in the body, and are required for all tissue growth, replenishment and repair.

  • Fats

    The nutrients that supply us with energy are carbohydrates, proteins and fat.


    Dietary fat is required:

    • To supply energy; dietary fat provides pets with 2.25x more calories per weight unit than protein or carbohydrates
    • To aid absorption of the fat-soluble vitamins A, D, E and K; dogs and cats need at least 1-2% of dietary fat in their food to absorb fat-soluble vitamins
    • To supply essential fatty acids: Omega-3 and Omega-6 fatty acids

    Essential fatty acids are needed:

    • As components of cell membranes, to maintain fluid membranes that allow the passage of molecules
    • For the synthesis of diverse active substances in the body, such as prostaglandins
    • To control water loss through the skin
  • Minerals


    More than 18 mineral elements are believed to be essential for mammals. By definition, macrominerals are required by the animal in the diet in larger amounts and microminerals, also called trace elements, are required in much smaller amounts.

    There are 7 macrominerals:

    • Sodium
    • Phosphorus
    • Calcium
    • Chloride
    • Magnesium
    • Potassium
    • Sulphur

    There are at least 11 microminerals,
    the major ones being iron, zinc, copper and selenium.

    • Iron
    • Yink
    • Copper
    • Selenium
    • Iodine
    • Chromium
    • Fluorine
    • Cobalt
    • Molybdenum
    • Boron
    • Manganese

    Minerals are required for the maintenance of:

    Skeletal structure Calcium, Phosphorus, Magnesium
    Acid base, fluid balance Potassium, Sodium, Chloride
    Cellular function All
    Nerve conduction Potassium, Magnesium
    Muscle contraction Calcium, Magnesium, Potassium
  • Antioxidants


    Cells are continually under attack from compounds called “free radicals” – a by-product of the body’s own metabolism or external sources such as pollution. They pose a particular risk to the nervous and immune systems since they can kill cells or damage the DNA within. They may even contribute to the progression of many diseases and the onset of premature ageing.

  • Vitamins


    Vitamins can be divided into two main groups depending on whether they are soluble in fat or water. In addition, there is a group of vitamin-like substances that are similar to vitamins without fitting exactly into either category.

    Fat-soluble vitamins

    Vitamin A, Vitamin D, Vitamin E, Vitamin K

    Water-soluble vitamins

    Vitamin B Complex, Thiamine (B1), Riboflavin (B2), Pyridoxine (B6), Cobalamin (B12), Niacin, Pantothenic acid, Biotin, Choline, Vitamin C

    Vitamin-like substances

    L-carnitine, Carotenoids, Flavonoids

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