G. demidoff sometimes is called G. demidovii. Galagoides resembles Galago but differs in that the upper parts are generally brownish or cinnamon rather than predominantly gray and in having a relatively longer muzzle. G. demidoff occurred 5-40 meters above the ground and slept in leaf nests or thick vegetation. The latter species was seen to make horizontal leaps of 1.5-2 meters. G. demidoff fed largely on insects, mostly small beetles and nocturnal moths, and also ate some fruits and gums.
Adult males are aggressive toward one another and apparently are territorial.
Adults of opposite sexes, however, may share the same area, sometimes sleep together by day, and have some contact at night, even though foraging separately. Each male seeks to control a home range that overlaps those of several females, and intense competition may result. The home ranges of several such males converge at a common point of slight overlap, where interaction occurs. These males may associate with other peripheral males and eventually may gain weight and shift into a central position. The last category, nomadic males, includes mostly young animals that do not remain long in any one area.