From the moment of mating to the first month of pregnancy, hence, at a time when we just assume that the bitch is pregnant, there are no changes in the appetite of the bitch (Bauer, 2001.). It is recommended to replace the bitches food before giving birth so that no gastrointestinal disturbances occur. If the bitch is of ideal weight during mating time, it is not necessary to increase the intake of the food until the fifth week of pregnancy. After the fifth or sixth week of pregnancy, the intake of food should be increased gradually, so that around the time of birth the daily intake is about 25% to 50% higher than her usual maintenance needs, depending on the size of the litter and the size of the bitch. Her body weight should be increased by about 15% to 25%. It is important to provide enough food during this period because dogs who are malnourished from middle to late pregnancy may have difficulty in maintaining body condition important for high milk production requirements occurring during breastfeeding. During lactation, the most important are calories and water. During the peak of lactation, energy needs are increased by up to 3 times before pregnancy, which occurs approximately 2-3 weeks after birth. There is also an increase in the need for proteins. Insufficient protein in food is associated with poor production of milk and with slow and poor development of puppy immunity. The intake of calcium and phosphorus must be increased to support milk production. For puppies, colostrum is of utmost importance because it provides specialized nutrition and passive immunity. Milk is the perfect puppy food. With 3 to 4 weeks of age, puppies will start to be interested in solid food. When this happens, the bitches daily intake should slowly decrease. When it's time to wean puppies (from 7 to 8 weeks), bitches food intake should be less than 50% above its normal maintenance. Puppies that start to eat solid foods at the age of three to four weeks usually consume a large portion of the diet in the form of solid food by the age of 6 to 7 weeks.