Yes, the puppies are malnourished.
If you are going to get one of these pups. I would do it now. Take it straight to the vet, and plan on feeding it multiple small meals a day.
For rescue puppies that thin, I add small amounts of cooked beef liver to their food.
Not all those who wander are lost.
Life is just a leap of faith.
Spread your arms and hold your breath and always trust your cape.
Two things define you. Your patience when you have nothing, and your attitude when you have everything.