There's a lot of funny stories about pet homes. Have you ever noticed that a lot of bitches give birth to their children and take care of them? Actually, she thinks so:

I thought it was the master's child.
The master tends to the pups, so the pups smell on the pups and think that they are the master's children, so they come back to take care of them themselves.
Bitch doesn't want to feed.
Some of the bitches have given birth at a very young age and they don't know what to do, so they're born, and they don't go to breast-feeding, but they're scared. Some of the bitches brought the pups to the master for fun. They are not irresponsible, they are not psychologically transformed, they feel like the master's “baby”, they are small.
The pups are sick.
Newly born pups are vulnerable to illness and can easily die if they have sustained diarrhea and fever. When the bitch finds out she's sick and can't help herself, she takes the baby to the owner, hoping someone can save her.

To express your joy.
When the dogs are mothers, they're happy to share this joy with their closest owners. Because she thinks she's part of the family, she wants to share everything with her.
Bitch can't take care of her.
Bitches are also the first mothers of dogs, and they probably don't know how to take care of them. If there is no way to do so, go back to your closest master, hoping that the master will nurse the child and educate the dog, which is the way the bitch trusts the master.

If the bitch is undernourished, there's no milk. The owner can feed the baby dog with goat milk, and then slowly feed the dog with goat milk to ensure the nutritional balance of the dog so that he can grow up healthy.
After production, she needs a large amount of supplementary nutrition, which can feed her with fish soup, chicken, nutrients, etc.
After this, I'm sure you've learned a lot, too.