In Argentina, red brocket deer reproduce from August to October. In Suriname, does give birth over at least a seven month period, while in Guyana fawning occurs throughout the year. Does typically give birth to one young, but twinning is not uncommon. The gestation period in captivity averages 225 days. Does reach sexual maturity after 13 months, stags are mature at 12 months.
Average birth mass: 538.5 g.
Average gestation period: 225 days.
Average number of offspring: 1.3.
Average age at sexual or reproductive maturity (male)
Sex: male: 365 days.
Average age at sexual or reproductive maturity (female)
Sex: female: 395 days.