The Watusi are very active, energetic animals. Its large horns, which can reach up to 8 ft from tip to tip, are used for defense and cooling by honeycombs of blood vessels. During the day, the calves sleep together, with an “auntie” cow nearby for protection. At night, the herd sleep together, with the calves in the center of the group for protection. The horns of the adults serve as formidable weapons against any intruders.