Is it normal for a weak newborn puppy to die shortly after birth?

The puppy may generally be weak, have a birth defect or did not develop properly. This is actually why dogs have many puppies, as there may always be one that will not do well and possibly die. I suggest you take the whole litter and mother to your veterinarian for an exam. There are so many possible causes for this that is not possible to determine the cause from your description and without a hands-on exam.

If the mom is not producing enough milk then you need to supplement and bottle feed them with a puppy milk replacer. You should also be weighing them daily to monitor their weight gain. If the puppies continue to have problems then they should be examined by a vet to determine the cause.

I'm so sorry to hear about your pup. First step is to warm him up. A Heating pad set on low with the cloth cover on will work. Other types of warm packs are ok too as long as there is a towel/cloth between the heat source and the pup. Keep heating until a rectal temp of 99 is achieved. Meanwhile, rub a small amount of white karo syrup or honey on his gums to help with low blood sugar. Between these two things he will hopefully perk up within 10-20 minutes enough to take the bottle/teat. Then feed as often as he cries. DO NOT try to syringe or force food until you are sure he is swallowing well as this can cause pneumonia if he accidentally inhales a little. Side note: I know it's silly, but be sure that you have poked a hole in the nipple of the bottle (many come with no opening which is weird). Sometimes, despite these efforts, a puppy will not respond and you will need to see the emergency vet for IV bloodsugar and fluids, etc. Even then, we sometimes cannot save them and they do pass. Many times these are the runts of the liver or we suspect there is something else going on (born with a congenital organ problem). Hope this helps and best of luck to you and the baby!

I would recommend to continue to supplemental feeding. Its possible that there is a congenital problem that is causing her to be so small compared to her littermates. I would recommend a vet visit to see if anything can be determined on physical exam. I would also recommend deworming the whole litter and mom to make sure parasites aren't a problem. The doctor may recommend bloodwork to check for any signs of liver problems. I hope this helps!

I'm very sorry this puppy is so sick! Newborn puppies are extremely fragile, and when they are sick, they have to see a vet immediately. She needs medical treatment from a vet right away for her best chance of survival, and I would take her into one now.

Considering the puppy is losing weight and failing to thrive, I would bring him into your local vet for an exam to check for any physical deformities that may be affecting his ability to nurse properly and eat, and for any potential illnesses or issues that could be causing him to not do as well. If he is able to eat with a bottle, I'd also recommend increasing his feedings if he still seems hungry, to try and keep weight on him and get him back up to speed.

I am so sorry to hear that one of the puppies doesn't seem to be thriving early on. This is very common unfortunately and it is called fading puppy syndrome, which is caused by a genetic defect with the puppy. You can try bottle feeding the puppy, keeping her warm, and get her checked to make sure she doesn't have a bacterial infection that needs to be treated for, but the chances of survival in cases like this are low. You can also try offering her small amounts of Karo syrup to keep her blood sugar levels up. But before all of that, check the roof of her mouth for an cleft palate defects, since that is a common cause for the symptoms you have described. I do hope that she does turn around, and do your best to help her. Take care.