Large flying fox fox was one of the many mammal species originally described by Linnaeus in the landmark 1758 10th edition of his "Systema Naturae", receiving the name "Vespertilio vampyrus". The large flying fox is among the largest species of bat. It weighs and has a wingspan of up to . Its head-body length is . As with all megabats, it has a fox-like face, hence its name. It lacks a tail and has pointed ears. The hairs on much of its body are long and woolly, but are shorter and more erect on the upper back. The mantle hairs tend to be
Large flying fox vocalizations. When moving to a suitable resting place after landing, an individual may fight with conspecifics along the way. A roosting flying fox is positioned upside down with its wings wrapped up. When it gets too warm, a flying fox fans itself with its wings. Roosting bats are restless until midmorning. Female large flying fox gestations are at their highest between November to January in Peninsular Malaysia, but some births occur in other months. In Thailand, gestation may take place during the same period with young being born in March or early April. Females apparently give birth during April and