Symptoms of early pregnancy in dogs:

1. When a dog is pregnant, its nipples will change in the first 2-3 weeks. A pregnant dog's nipples will become more pink, swollen, and larger.

2. The dog’s body shape will change. The dog’s body shape will change in the 4th to 5th week. At this time, its waist will become thicker and its belly will gradually protrude.

3. Living habits will change. Some dogs will lose their appetite when they are first pregnant and will appear listless and lazy. Some dogs will become more gentle and kind than usual, and some will want to rest alone.

4. By the fourth week, the morning vomiting will disappear, and the dog will eat more than usual, and may even ask the owner to eat more.

5. Some dogs will become more affectionate, while others do not want to be touched.