The white-headed capuchin is known to rub parts of certain plants into their fur. Plants used in this manner include citrus fruits, vines of the genera "Piper" and "Clematis", monkey comb (genus "Sloanea"), dumb cane and custard apple. Ants and millipedes are also used in this way. It is not definitively known what this fur rubbing is for, but this may deter parasites such as ticks and insects, or it may serve as a fungicide or bactericide or anti-inflammatory agent. Alternatively, it may be a form of scent marking.