The Visayan spotted deer (Rusa alfredi) is thought to be mainly nocturnal, emerging at dusk to begin feeding on a variety of different types of grasses, leaves and buds within the forest. These deer are social animals, usually found in small groups of three to five, but their mating system is poorly understood. In other members of the genus, mating is usually polygynous, with males competing for access to females through sparring and vocalisations. The breeding season of Visayan spotted deer is reported from November to December, although possibly beginning earlier, during which males produce a distinctive roar-like call. Young are born in May and June, after a gestation period of around 240 days. Offspring are weaned at six months and reach maturity from 12 months of age, at which point males begin to grow antlers.