Whats been your experience with the chihuahua weight chart? From what Ive seen it dosent seem to be very accurate. My firends chi was 2 lbs. at 12 wks. and is only 3.5 pounds at 2 yrs. Has the chart been correct with your chis? Also When will my 3 mo. old chi get his long coat? You can tell he has a longer coat but when will it come in fully?