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.
Temeraire (series)
Much more common than heavyweights, these dragons make up the bulk of any country's aerial forces. Middleweights range in weight from 10 tons to 20 tons. Yellow Reapers can weigh as little as 10 tons (with a maximum weight of 17 tons), making them one of the smallest middleweights. British Parnassians are said to be large middleweights, weighing around 18 tons on average, very close to the minimum weight of a heavyweight dragon. Middleweights are much more likely to show special offensive capabilities, such as spitting acidic venom (Longwings), or breathing fire ("Flamme-de-Gloire") than heavyweights. Middleweights tend to be faster and more agile than heavyweights, although if lacking special abilities, they are unlikely to be able to match any heavyweight in a fight.