Any responsible dog owner will at some point wonder whether wet food or dry food is best for their beloved companion, and one frequently discussed factor is moisture content. Dry food typically contains around 10-20% moisture, whereas wet food normally contains about 70-75%. Understanding these differences helps ensure your dog stays properly hydrated and healthy throughout their life.
Moisture, or water content, refers to the natural water found within the ingredients of the dog food, not simply water added as filler. For example, muscle meat, which is the primary protein source in many dog foods, contains naturally about 75% water. Vegetables and fruits often have even higher moisture content. So when a label indicates 75% moisture, this reflects the natural water within the ingredients rather than water artificially added.
This distinction is important. Unlike some processed human foods where water may be added to bulk out the product, quality dog foods maintain a balance between moisture and nutrients to provide a wholesome diet.
Dry dog foods, commonly referred to as kibble, contain much less moisture because they are intentionally dehydrated during processing to preserve shelf life and reduce packaging volume. This means a smaller amount of dry food can deliver equivalent nutrition compared to a larger volume of wet food.
With lower moisture content, dogs fed dry food will naturally need to drink more water to compensate for hydration needs. Some owners choose to add water or soak kibble to help increase moisture intake and aid digestion. However, providing fresh water alongside dry food remains essential to prevent dehydration and reduce long-term risks such as urinary tract and kidney issues, especially in older dogs.
Dogs eating wet food benefit from the higher moisture which supports hydration, digestion, and can reduce constipation risks. On the downside, because wet food sticks more readily to teeth, it may increase the risk of dental plaque buildup without regular dental care. Dry kibble, conversely, can help mechanically clean teeth but requires increased water intake.
Balancing moisture is about finding what suits your dog's individual health, lifestyle and preferences. In some cases, combining dry and wet foods provides the best of both worlds.
Dog food labels show nutrient percentages "as fed," which includes moisture. For a fair comparison between foods with different moisture levels, it can be helpful to convert ingredient percentages to a "dry matter basis" by removing moisture. This provides a clearer picture of the actual nutrient content your dog receives.
Understanding this helps avoid misinterpreting moisture content as water filler and supports better decisions for nutrition and value.
Moisture content is a natural and important aspect of dog food that influences hydration, nutrition, and overall health. Neither wet nor dry food is universally better; the choice depends on your dog's needs, preferences, and lifestyle.
By understanding what moisture means on labels and how it affects your dog, you can make more informed choices to support their wellbeing throughout life. Remember to provide plenty of fresh water, maintain dental care, and seek professional guidance when needed to keep your dog healthy and happy.