1. According to the physiological characteristics of dogs: puppies, adult dogs, elderly dogs, pregnant dogs and lactating dogs

2. According to the function of the food eaten: energy part (protein and vitamins, such as beans, meat such as fish meat, natural protein powder and vitamins, etc.) calorie part (fruits, vegetables, etc.) , rice, pasta, etc.) functions should be matched according to the energy and calorie needs of pets in the morning and evening.

Third, we should pay attention to the feeding amount of meat, not too much, especially the internal organs of animals. Because meat metabolism produces uric acid, animal offal is a high purine food, and catabolism also produces high blood uric acid, which is the component that forms stones. Therefore, the daily diet should be matched with meat and vegetarian food. Dogs are carnivores and need a supply of meat protein, and at the same time, they should be given foods rich in cellulose. Eat less salt, too salty diet will increase the workload of the kidneys.

Fourth, breakfast and dinner should be balanced. 2/3 of the protein in the whole day should come from the morning diet. The protein in the pet's body is rapidly updated and converted all the time. The quality of breakfast protein must be a qualified meal. The nutritious breakfast for pets should follow the requirements of two elements of food (energy part, calorie part), and pay attention to the appropriate combination of protein nutrition foods, such as meat, poultry, fish, beans and cereals, etc. Make a reasonable match. Breakfast must have main ingredients. Breakfast is the meal that is least easily converted into fat in the day, so be sure to eat the main food (meat or meat-rich food).

The calorie provided by the dog's breakfast accounts for 30% of the whole day, which is mainly provided by the staple food. Lack of carbohydrate staples can lead to malnutrition. It is necessary to eat some starchy foods. The cereals can be quickly decomposed into glucose after being absorbed, so as to correct the hypoglycemia phenomenon after the dog rests overnight. However, cereals are digested quickly, and you will feel hungry after 2-3 hours. Therefore, eat some foods rich in protein and fat, such as meat or foods rich in meat.

The dog eats less for dinner, and the dog sleeps soundly. The specific amount depends on each dog's breed, size and other physical conditions and the needs of the dog's own body. We often feed the dog's food intake to the extent that it is not hungry. Dinner must not be full, let alone overstretched. Otherwise, some dogs will vomit after eating.

Secondly, choose foods high in fiber and carbohydrates for dinner. Dinner should have two or more vegetables, both to increase vitamins and provide fiber. Milk is also a very good choice. It depends on personal economic conditions. You can eat a small amount of meat. After all, our pet activities at night do not require a lot of energy.