They also breed extraordinarily quickly. Females are capable of reproducing at only 3 months old, are fertile year round, have a gestation period of only 115 da

They also breed extraordinarily quickly. Females are capable of reproducing at only 3 months old, are fertile year round, have a gestation period of only 115 days, and produce litters of 4-6 per pregnancy. Even with control efforts, populations have been growing at a rate of ~20% annually.