I have a new puppy, at 7 weeks and a wfew days she was 12.1, today at 60 days on a different scale she is 15.6. She seems skinny too, she eats raw and I was worried she was not growing and bought a scale and she is definitely growing. Im open to advice if its too much ill feed less.
I have learned that even within the same litter there can be a significant difference in size. A couple of my boys littermates live close and we get together every so often. For a while the differences were astounding. The gaps have narrowed as they have gotten older but still there are definite differences.