Wildebeest
Both species of wildebeest are even-toed, horned, greyish-brown ungulates resembling cattle. Males are larger than females and both have heavy forequarters compared to their hindquarters. They have broad muzzles, Roman noses, and shaggy manes and tails. The most striking morphological differences between the black and blue wildebeest are the orientation and curvature of their horns and the color of their coats. The blue wildebeest is the bigger of the two species. In males, blue wildebeest stand 150 cm tall at the shoulder and weigh around 250 kg, while the black wildebeest stands 111 to 120 cm tall and weighs about 180 kg. In females, blue wildebeest have a shoulder height of 135 cm and weigh 180 kg while black wildebeest females stand 108 cm at the shoulder and weigh 155 kg. The horns of blue wildebeest protrude to the side, then curve downwards before curving up back towards the skull, while the horns of the black wildebeest curve forward then downward before curving upwards at the tips. Blue wildebeest tend to be a dark grey color with stripes, but may have a bluish sheen. The black wildebeest has brown-coloured hair, with a mane that ranges in color from cream to black, and a cream-coloured tail. The blue wildebeest lives in a wide variety of habitats, including woodlands and grasslands, while the black wildebeest tends to reside exclusively in open grassland areas. In some areas, the blue wildebeest migrates over long distances in the winter, whereas the black wildebeest does not. The milk of the female black wildebeest contains a higher protein, lower fat, and lower lactose content than the milk of the blue wildebeest. Wildebeest can live more than 40 years, though their average lifespan is around 20 years.
White-tailed deer
The white-tailed deer is highly variable in size, generally following Bergmann's rule that the average size is larger farther away from the Equator. North American male deer (also known as a buck) usually weigh , but in rare cases, bucks in excess of have been recorded. Mature bucks over have been recorded in the northernmost reaches of their native range, specifically, Minnesota and Ontario. In 1926, Carl J. Lenander, Jr., took a white-tailed buck near Tofte, MN, that weighed after it was field-dressed (internal organs and blood removed) and was estimated at when alive. The female (doe) in North America usually weighs from . White-tailed deer from the tropics and the Florida Keys are markedly smaller-bodied than temperate populations, averaging , with an occasional adult female as small as . White-tailed deer from the Andes are larger than other tropical deer of this species, and have thick, slightly woolly looking fur. Length ranges from , including a tail of , and the shoulder height is . Including all races, the average summer weight of adult males is and is in adult females.