Although similar in appearance to hyenas , African wild dogs are nevertheless true wild canine . They are a mixture of black, yellow, and white in such a wide variety of patterns that no two individuals look exactly alike. African wild dogs are widely distributed across the African plains but they do not live in jungle areas. They are social animals, living in groups of usually from 2 to 45 individuals. A hierarchy  exists within the group,  but the animals are friendly to one another. The young and the infirm  are given special privileges within the group. African wild dogs use their sense of sight, not smell, to find their prey. They can run up to 55 km/h for several kilometers. In eastern Africa, they mostly hunt Thomson's gazelles, but they will also attack calves, warthogs, zebras, impalas, and the young of large antelopes such as the gnu. Growing human populations have decreased or degraded the African wild dog's habitat and also diminished their available prey. Road kill and human persecution  have also had a negative impact on African wild dog populations. This species is also _ to a variety of diseases such as distemper, which is controlled in domestic .dogs. Conservation of the African wild dog's natural habitat must have the highest priority, as these dogs suffer in habitats modified by human intrusion . What can we infer from the passage?
African wild dogs are not in danger, because there are such a wide variety of patterns. African wild dogs are not in danger, because are widely distributed across the African plains. African wild dogs are in danger, because human's activities have a great effect on them. African wild dogs are in danger, because their habitats have been changed much.