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Old 02-14-2009, 08:07 PM   #1
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Default Is there a magical formula to guess the adult size of mutt

So is there a magical or proven scientifical formula for guessing the size a mutt puppy will be when once fully grown?

I have looked for growth charts but can only find ones for specific breeds, whic I guess would be much easier to guess at.
Do puppies tend to go more towards the mothers size and looks?

I have a new puppy and just for fun we are guessing here at home how much he is going to weight at 4months- 6months - 8months -10months- 12months.
Has been posted on the fridge calendar and we check once the date rolls around...his 4month date is in 2 weeks he will see the vet in a week and a half...so we will use that weight.
At 11weeks he was approx 5-6 inches at the top of the shoulder and 9.5lbs.
He is now 14weeks and has not gotten much taller he is around 6inches tall and I think about 11lbs...short and stocky little guy.

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T

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Old 02-14-2009, 08:22 PM   #2
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This is something that I would love to develop. The reason is that if you get a pound puppy from the shelter, you have no clue how much to feed it. The food bags go by adult weight, so if you don't have any idea what that is, how are you supposed to know?

If you figure it out, let me know! Maybe I can help.
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Old 02-14-2009, 08:28 PM   #3
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I don't think there's much of a way of guessing, unless you see the parents you can guess from their size/looks. That said - Coco's parents were both big & she is small. Both of Izzy parents were under 10 lbs - she is 12 lbs & not the biggest of her batch!
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Old 02-14-2009, 08:51 PM   #4
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As for feeding it's best to just look at the body condition of the dog - if the dog is porking up you feed less and if it's too lean feed more.

I always judged my mutt by the size of her paws - once her paws started looking about right compared to the rest of her I figured she was close to done. Susie was a bit easier to guess though since I knew the breed mix(lab/shep/husky) so I looked at those and averaged her out. She's 50lbs now at 13 months old.

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Old 02-14-2009, 09:53 PM   #5
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I can only go by knowing my dogs. My females are mostly medium sized, Wipka is large and heavy boned girl. My two males are large, strong, big bones, so the pups on Inko get very big, have large ears for a time then grow into them and are then beautiful adults once through the gangly stage.

Gino pups are more generous in pigment, and have normal ears, grow into gorgeous adults, but big also. Some are not big of couse as I am now on second set of alphabet on X and Y litters, so not all are size of the males.

It just depends on the mix in mutts, when one does not truly know the parents, it could go either way. Usually the height is reached by nine months, then maturatey can go to two years another reason hips are not certified, but can be primliminary done if one wants to use before two.
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Old 02-15-2009, 12:34 AM   #6
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Quote:
Originally Posted by skunkstripe View Post
This is something that I would love to develop. The reason is that if you get a pound puppy from the shelter, you have no clue how much to feed it. The food bags go by adult weight, so if you don't have any idea what that is, how are you supposed to know?

If you figure it out, let me know! Maybe I can help.
There are, in fact, formulas for determining how much energy a pup needs at a particular weight at a particular age. There are also formulas for determining the approximate kcal/100g of a food, based on the proximate analysis, if the label does not explicitly state how many kcals the food provides for a given unit of measure.

If you know the age and weight of the puppy, and the kcals of the food, you can estimate how much of that food the puppy needs per day, and be in the ballpark, whether it is mixed or purebred. Sometimes, it can seem like a huge amount of food, and it is, which is why you feed pups up to four or five times a day - so they can get it all down.

That wasn't the OP's question, though, so I won't bore you with formulas and factors, here.

Puppies grow at different rates at different ages, and grow at different rates depending on the breed(s). So, a precise estimate of adult size for a mutt is difficult. There are some rules of thumb for weight, but size is very difficult to estimate. The rule of thumb for dogs with small or medium breeds in their background is that their adult weight will be about twice their weight at 4 months. The rule of thumb for dogs with large or giant breeds in their background is that their adult weight will be about twice their weight at 5 months.

All dogs reach peak growth rate at 4-6 months. Small dogs peak earlier. Large dogs peak later. Small dogs grow for about a year. Medium dogs grow for about a year to 18 months. Large breeds grow for about 18 months to 2 years. Giant breeds grow for 2-3 years.

Small dogs sometimes reach about 80% of their adult height at around 6 months. Medium dogs reach about 80% of their adult height at 9-12 months. Large breeds reach about 80% of their adult height at 12-15 months and continue to grow until about 24 months. Giant breeds reach about 80% of their adult height at 15-18 months, and continue to grow until about 24 months, adding a very little bit of height between 24 and 36 months. Once they reach about 80% of adult height, more of their growth is in weight.
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Old 02-16-2009, 09:41 PM   #7
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WOW, good info thanks!
I figure the new pup Lhasa x chow will be medium sized...he is not quite 4mnths and is about 13-14lbs and only about 6inches at the shoulder. He is quite short and longish now.
We have old growth charts we kept on the labs...he is about half their height at this age (4mos) and maybe 15-20lbs lighter, so roughly half the weight too...
So my guess is he will be about half their size when grown...
But his feet throw me off... they are huge and webbed even more so than my labs I think...maybe he has duck or frog in him...no wait Seal...his serious bark does resemble a seals bark...and he loves ice and snow maybe he is part Harbor Seal!HAHA!
Oh the fun of mutt puppies! I love it!

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