Water is an essential nutrient and is considered the nutrient most critical for survival. Losses in body water of just 10-15% can cause death, with animals able to tolerate much higher fat or protein losses.

Grains are a valuable source of nutrients in pet food.

Water is vital to health. How much water should pets drink, are there differences between cats and dogs, and how can pets be encouraged to drink?

By-products are a safe and nutritious ingredient, but pet owners may perceive that pet foods containing by-products are low-quality.

Grains provide valuable nutrients, but pet owners may believe that grains are “fillers” or that they may be a source of food allergies.

Similar to human foods, ingredients used in pet foods come from a number of sources. Many are obtained directly from animal or plant raw materials, but they can also be manufactured (or synthesized) and are referred to as ‘synthetic’ ingredients. What types of synthetic ingredients are used in pet foods and what is their role?

Purina was the first to use prebiotics in pet food and is a leader in the field. What are the benefits of prebiotics to pets?

Salt is an important component in pet foods and is involved in a number of critical functions in the body. With recommendations to restrict salt intake in people, does the same apply to pets?

Soy can provide nutritional advantages for pets, but pet owners often question the quality and health impacts of this ingredient.