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Thread: average weight- 12 weeks

  1. #11
    Join Date
    Jun 2012
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    I tried out Luke's 12 week weight in a calculator. It came up with 16 lb 1 oz for his adult weight. I think he'd be rather fat looking at that weight. Of course, for a larger dog, being off a pound and a half isn't much, but for a tiny guy, that's quite a bit.

  2. #12
    Join Date
    Mar 2005
    Dublin, Ireland
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    It is hard to make accurate predictions with calculators - they are more for general fun than accuracy! Each puppy is so different, and the likely weight depends on factors like the size of the overall litter (puppies from larger litters tend to be smaller to start with, so doubling the weight at 14 or 16 weeks isn't very accurate for those; they will be larger generally). Even the size of parents is not that accurate. You really need to know the average size across a couple of generations, and the size of the litter and whether a puppy was average in the litter or larger or smaller.

    A very VERY rough guide is that females will TEND to be about half their adult weight around 12-14 weeks, and males around 16+ weeks (males mature a bit more slowly). But that can be way off -- a small puppy in a large litter can easily end up far larger than double its weight at those ages.

    So the calculator guessing a 12 week old puppy weight 2.45kg will end up an adult of 5.3 is probably a bit on the low side.

    This is a note I have in the Library section from breeder Laura Lang:

    Size: Healthy puppies, in normal weight, born in normal sized litters are usually half their mature weight at 3 months of age for girls (14 weeks or so) and 16 or 17 weeks of age for boys. If your puppy was born in a normal sized litter (3-5 puppies), was a normal size at birth, is not fat or thin right now, has always been healthy and is 7 lbs. at 15 weeks--he will likely mature out at about 15-16 lbs. If the litter size was less than 3 puppies he will grow faster at first and be larger at this stage than normal. If the litter size was more than 5 puppies he will probably grow a bit slower at first and be smaller at this stage than normal.

    Note: Parental size has less to do with puppy size than 'family size'. In other words if the parents were the smallest in their respective litters they are highly likely to produce puppies more the size of most of the members of their family--or larger than they themselves are. You really can't go by the size of the parents much for this reason.
    Cavaliers: Tansy : Mindy Connie Roxy Neasa Gus
    In memory: My beautiful Jaspar Lucy Leo Lily Libby


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