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Zebras are more closely related to wild asses (a group which includes donkeys) than to horses. The horse lineage diverged from other equids an estimated 4.0 - 4.7 million years ago; [14] zebras and asses diverged an estimated 1.69–1.99 million years ago. [12] The cladogram of Equus below is simplified from Vistrup et al. (2013). [14]
Zebras are usually wild animals. However, when they are raised with other domestic horses, they are tame enough to be ridden draught. [2] Mules are smaller, more resistant to heat and exhaustion and much stronger. Horses are much larger, but likely to suffer from exhaustion and heat. [2]
A 2013 phylogenetic study found that the plains zebra is more closely related to Grévy's zebras than mountain zebras. [14] The extinct quagga was originally classified as a distinct species. [15] Later genetic studies have placed it as the same species as the plains zebra, either a subspecies or just the southernmost population.
Equus (/ ˈ ɛ k w ə s, ˈ iː k w ə s /) [3] is a genus of mammals in the family Equidae, which includes horses, asses, and zebras.Within the Equidae, Equus is the only recognized extant genus, comprising seven living species.
Since zebras are much rarer than horses in the United States, the sound of hoofbeats would almost certainly be from a horse.) By 1960, the aphorism was widely known in medical circles. [ 3 ] [ 4 ] The saying is a warning against the statistical base rate fallacy where the likelihood of something like a disease among the population is not taken ...
The arrival of big-headed ants ‘spells almost certain doom’, one study found
Zebras are exclusively herbivorous. Their diet is almost entirely made up of grasses, but they also eat leaves, bark, shrubs, and more. Like all members of the horse family, zebras spend more time feeding than ruminant herbivores, such as antelope and wildebeest do. This is because horses, including zebras, do not chew their cud.
Jot your thoughts down in a journal or diary — but instead of a computer, use good old-fashioned pen and paper, which is better for memory and learning than typing, according to recent research ...