Rhinoceroses are, generally, solitary animals that prefer to live an independent life. They will squirt urine onto a tree, bush or trunk every five to six minutes when establishing their territory. Rhinos make extensive use of their sense of smell to communicate to and with others that they are present. Therefore, when other rhinoceroses enter the territory, they will be aware of the presence of another animal, implying that the territory is not available for habitation. They will also scatter their dung throughout the region. If rhinoceroses are forced to co-exist in a space that does not allow for them to establish their own territories of the size they need, the results can be severe stress, injury and death, as they fight aggressively to establish dominance.