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4 month weights

  1. Zerlina

    My Two Guinea Pig Sisters Weigh Completely Different Amounts; Is This Normal?

    My two guinea girls are about 4 months old. They are both looking well and eating well, but one of them weighs 534g (about 18 oz) and the other weighs 310g (10 oz) They are sisters and supposed to be the same age; is such a big difference normal? Are they both within reasonable limits? I'm a...