Waterbuck stand 120 to 136 cm (47 to 54 in) at the shoulder. Head-and-body length ranges from 140 to 240 cm (55 to 94 in) and tail length from 10 to 45 cm (3.9 to 18 in). Females weigh 160–200 kg (350–440 lb). Their coats are reddish brown in colour and become progressively darker with age; they have a white 'bib' under their throats and white on their rumps. Waterbuck are found in scrub and savanna areas near water, where they eat grasses. Despite their name, waterbuck do not spend much time in the water, but will take refuge there to escape predators. They are diurnal. Females gather in herds of between two and 600 individuals.