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Zara
Hi just wanted to know how heavey my 9 week old guinea pigs should be they are two brothers rico weighs 466g and rocky is 586g
Claire W
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They are great weights 
so long as your boys continue to gain, you don’t have anything to worry about
so long as your boys continue to gain, you don’t have anything to worry about
Z
Zara
Thank u so much its just i wanted to make sure they where the right weights as this is my first time having guinea pigs i grew up with mainly hamsters big differenceThey are great weights
Your two are a very good weight. Siblings can differ quite a lot in their individual weight
Please take the time to read this guide here. It also explains how you can judge at all times and ages whether a piggy is the right weight/size ratio and not over- or underweight: The Importance Of Weighing - Ideal Weight / Overweight / Underweight
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Zara
I'm so relievedto hear that there weights are ok