
Crikey - I've never had pups lose weight in the day or so after birth - they just about double it in about 24 hours, actually, but they are usually comparatively small when they are born, maybe as I have eight or so in a litter.
By day two they are rounded little people, but quite scrawny when they're born.
It's probably a matter of litter size, breed, milk supply or a combination of all three.
I've never used Carnation milk to supplement - is it as good as Lactol?
Jo