Many dog foods are mostly grains. Many of these dog foods use grains like wheat and corn because they are inexpensive. This leaves the food with little nutrition, as these grains have few nutrients in them. A no grain dog food cuts out all of these grains and is generally made with a high amount of meat and a few vegetables. These are nutrient-dense foods that are much better for dogs to eat.
When a dog owner chooses a no-grain dog food, they can also help their dog with any allergies that they have developed. The cheap grain fillers in most dog foods can cause common skin allergies in dogs. These give dogs a rash and itchy areas that can affect their quality of life. With grain-free dog food, there are none of these grains to cause those allergies.
Grain-free dog food is also usually higher in protein than one that contains grains. When the protein level is higher, dogs get more of what they need to stay healthy. A high-protein diet allows them to get the amino acids they need for better health. These foods generally have better quality nutrition for dogs, and this can affect many aspects of their lives.