In addition to being fuzzier, their coloring is starting to lighten and as you can see in the pictures their snouts are starting to grow. They actually look like some sort of canid now. Pup #3 may be the oldest as his eyes are starting to open. Or, Pup #3 and Pup # 6 are the heaviest maybe eye-opening has to do with size?
Picture of just three below in our usual bucket. The bucket won’t work after another week or so