Onager (their status in China is not well known). Persian onagers are currently being reintroduced in the Middle East as replacements for the extinct Syrian wild ass in the Arabian Peninsula, Israel and Jordan. The specific name is Ancient Greek ἡμίονος ("hēmíonos"), from ἡμι- (hēmi-), half, and ὄνος (ónos), donkey; thus, half-donkey or mule. In Persian the archaic word "gur" preserves the second syllable of the common Indo-European term that includes "ona"/"ono" (donkey) and "ger"/"gur" (swift). The species was commonly known as Asian wild ass, in which case the term "onager" was reserved for the "E. h. onager" subspecies, more specifically
Limitations of animal running speed Limitations of animal running speed Limitations of animal running speed provides an overview of how various factors determine the maximum running speed. Some terrestrial animals are built for achieving extremely high speeds, such as the cheetah, pronghorn, race horse and greyhound, while humans can train to achieve high sprint speeds. There is no single determinant of maximum running speed: however, certain factors stand out against others and have been investigated in both animals and humans. These factors include: Muscle moment arms, foot morphology, muscle architecture, and muscle fiber type. Each factor contributes to the ground reaction force (GRF) and foot