Which deer species has the most distinctive cream-colored rump?

The deer species known for its most distinctive cream-colored rump is the White-tailed deer. This characteristic is prominent in both adult and juvenile individuals of the species. The white underside of the tail is particularly evident when the deer is alarmed or when it runs, making it a key identifying feature.

In contrast, elk, while they are a large member of the Cervidae family, do not have a distinct cream-colored rump that stands out in the same manner. Mule deer are characterized by their large ears and differing coloration but do not exhibit the same tail coloration as the White-tailed deer. Caribou, on the other hand, have antlers and a different body structure that does not feature the cream-colored rump that is synonymous with White-tailed deer. The distinctiveness of the White-tailed deer's rump is an important factor for hunters and wildlife enthusiasts in identifying and differentiating the species in the field.