How soon after giving birth does a female guinea pig go into heat?
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Expert Answer
A female guinea pig comes into heat about 2 hours after birth with up to 80% mating success, but breeding then badly harms her body and risks miscarriage or fetal deformity, so wait until lactation ends. The best pregnancy age is 5-9 months; breed then, since earlier or later raises miscarriage and dystocia risk.