• Gestation lasts about 230 days and the female usually produces a single fawn.

European fallow deer typically live from 20 years and 3 months to 33 years and 9 months, although the maximum recorded lifespan is 27 years, with a theoretical lifespan ranging from 10 years and 7 months to 21 years and 1 month. The species reaches sexual maturity from 1 year and 4 months to 4 years of age; the young are born with their eyes open and begin walking immediately. During the embryonic stage, the fetus develops inside the mother and receives nourishment from her. The fawn stage follows, where the young deer lives with its mother, feeds on milk, and learns to find plants, lasting from 1 day to 6 months. Subsequently, the species enters the adult stage, which lasts from 2 to 20 years, during which time the deer can reproduce and lives independently or in groups.