Although fearsome looking, cape water buffaloes are primarily grazers and dependent on water. They are gregarious, living in herds of 20 to 40 animals on average. Their eyesight is rather poor but their sense of smell is acute. Both males and females have heavy, ridged horns that grow straight out from the head or curve downward and then up. The horns are formidable weapons against predators and are used when jostling for space within the herd; males use the horns in fights for dominance.