Old age in dogs begins at different ages - much depends on the dog's size and breed.
For example, in large breed dogs, old age begins at about 7 years, and in smaller representatives at 9 years.
The diet of an elderly pet should be slightly different in terms of nutrient content.
Let's look into this issue in a little more detail.
A proper diet should contain at least 20% animal protein. This will allow the dog to maintain muscle mass.
Choose dry food with a composition that contains reduced amounts of fats and carbohydrates.
These 3 components should also be present in food.