Black wildebeest
The black wildebeest or white-tailed gnu ("Connochaetes gnou") is one of the two closely related wildebeest species. It is a member of the genus "Connochaetes" and family Bovidae. It was first described in 1780 by Eberhard August Wilhelm von Zimmermann. The black wildebeest is typically in head-and-body length, and the typical weight is . Males stand about at the shoulder, while the height of the females is . The black wildebeest is characterised by its white, long, horse-like tail. It also has a dark brown to black coat and long, dark-coloured hair between its forelegs and under its belly.
Harpy eagle
Female harpy eagles typically weigh . One source states that adult females can weigh up to . An exceptionally large captive female, "Jezebel", weighed . Being captive, this large female may not be representative of the weight possible in wild harpy eagles due to differences in the food availability. The male, in comparison, is much smaller and weighs only about . Harpy eagles are long and have a wingspan of . Among the standard measurements, the wing chord measures , the tail measures , the tarsus is long, and the exposed culmen from the cere is .
It is sometimes cited as the largest eagle alongside the Philippine eagle, which is somewhat longer on average, and the Steller's sea eagle, which is slightly heavier on average. The wingspan of the harpy eagle is relatively small, an adaptation that increases maneuverability in forested habitats and is shared by other raptors in similar habitats. The wingspan of the harpy eagle is surpassed by several large eagles who live in more open habitats, such as those in the "Haliaeetus" and "Aquila" genera. The extinct Haast's eagle was significantly larger than all extant eagles, including the harpy.