The white rhino is gregarious by nature. The complexity of rhino interaction and messaging is multifaceted and valuable in terms of survival. They communicate matters of rank, dominance, territory, courtship and kinship in an assorted vocabulary of vocalization, defecation-middens, urine marking, touch and posture. Family ties between mother and calf are affectionate and last a long time while the bulls are more assertive in their interaction with one another.