Most will. In wild dog packs, puppy survivability is around 5%. In comparison with their the closest relative, the gray wolf's puppies have a 91 ~ 95% chance of surviving.
So you’re saying wild dog packs face a tougher crucible of evolution than the socialist wolves growing fat and stupid with their 95% survival rates.
"Yay I get to run around outside for a few minutes! I hope I can breathe well enough to keep up with thi--" *dies*
— Pugs