The details of paca reproduction are somewhat vague. In parts of Mexico mating may occur principally in winter, but in Colombia there is no indication of seasonal mating. Single young are usual and twins are rare. There is some evidence for two litters per year. Gestation has been reported to last 118 days. In Colombia females begin to reproduce at around 1 year.
Range number of offspring: 1.000 to 1.000.
Average number of offspring: 1.030.
Range gestation period: 114 to 119 days.
Average weaning age: 82.000 days.
Parental Investment: precocial
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