Was it underfed at all? We got a pair of female normals from someone that Connie worked with who had them for about 2 years, only fed them one mouse a month. They were right around 600 grams when we got them, which would have been mid October of last year. They both broke past the 1800 gram mark this month. We also have a pinstripe that we picked up at Tinley last year who weighed 500 grams at the time, and she's also over 1800 grams now.
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