Jackson followed the double 12 week weight perfectly. He weighed 6lbs at his 12 week
vet visit and now at over 1 year, he's 12lbs. He was 8.6lbs at 15 weeks. He didn't really
grow much after like 6 months of age. As for size difference, one of Jackson's BEST
little doggie friends is an almost 6lb yorkie, and he is double her size so it should be fine.