A native dog can give birth to two babies a year. Dogs usually go into heat for the first time at 6-8 months of age. From then on, it will come into estrus about twice a year, mainly in spring and autumn, and each estrus lasts for 7-15 days. The gestation period is about two months, so as long as the dog is bred during the estrus period and the pregnancy is successful.

How to take care of a pregnant dog:

You can usually tell whether a dog is pregnant at 20 days. At this time, the dog’s nipples will become larger and rounder. The hair next to the nipple will fall out, which will be followed by morning sickness and loss of appetite. In the early stages of a dog's pregnancy, it is actually not suitable to blindly add meat, eggs, and milk. Although protein can be supplemented, the fetus cannot absorb it well at this time, which will cause the dog's obesity and lead to production difficulties. You can supplement some folic acid.