What changes will happen to the breasts when a dog is about to give birth?

What changes will happen to the breasts when a dog is about to give birth? When the dog is about to give birth, symptoms such as swelling, trembling and labor pain will appear in the chest. In addition, bleeding and thick liquid secretions may occur. The dog's nipples will become moist and a lot of hair will fall off. Its nipples will also become thicker and cracked.

The breasts that the dog is about to give birth will swell and even secrete a little milk, which looks red and swollen. The last few nipples of the dog can squeeze out milk. It will find hidden places to lie down. Its exercise ability is reduced and it will not move when it lie down.

The birth time of a dog is about two to ten hours, which mainly depends on how many babies there are in the bitch. Generally, it takes about 40 minutes for a bitch to give birth to a baby, and the next baby will be born after a short period of time. The next baby will be born until the last one.