Accuracy of growth chart For my Yorkie Oscar, the growth chart has not been accurate. At 8 weeks he weighed 1.2 lbs and was charting to be 3.6 lbs and at 12 weeks he already weighed 3.3lbs! Now he is 18 weeks and is 5.7 lbs. I annotate even guess what he will weigh fully grown but it does not matter. |