During pregnancy, dogs need to prepare sufficient water and food to supplement the nutrients needed by the body. You can replace adult dog food with puppy food, which will be more nutritious. When a dog is pregnant, the dog needs to eat more energy, so the food intake will be larger than before, so you need to prepare more food for the dog. In addition, you need to eat more vegetables every day to supplement the vitamins your body needs. Eggs can supplement lecithin and alleviate the hair loss of dogs after birth. Eating eggs can alleviate the hair loss. You also need to supplement calcium. You can go to the pet hospital to buy special liquid calcium or calcium tablets.