Wow, did I overestimate how long it would be before the pups would be walking. Some of the bigger and stronger ones started walking two days ago. Now they are all walking. They are surprisingly steady on their feet. I will post some video this weekend.
They continue to grow like crazy. The largest is 1 kilo. The smallest is 750 grams. They still spend most of their day sleeping in a puppy pile. I suspect when you are growing like that your body needs lots of rest.