When an animal is neutered, its metabolism slows down, therefore it requires fewer calories. If the owner continues to feed the pet the same amount of food after the surgery as before, it is very likely the pet will gain weight. The owner needs to limit the amount of food the pet gets as well as maintaining a healthy amount of exercise. I want my children to witness the miracle of life. Puppies can be born dead or die from complications at birth.
Dams can retain placentas, develop eclampsia, go into uterine inertia or die during a c-section.
The list of possible problems is very long. Buy the kids a book, it's cheaper, safer and far more humane. I work all day, but I don't need to worry about being there when she whelps. Back on the farm, our dog had her puppies out in the barn and no one ever helped. The dog has been a domestic animal for centuries.