American Mammoth Jackstock
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American Mammoth Jackstock
The American Mammoth Jackstock is a breed of North American donkey, descended from large donkeys imported to the United States from about 1785. George Washington, with Henry Clay and others, bred for an ass that could be used to produce strong work mules. Washington was offering his jacks for stud service by 1788. Large breeds of asses were found in Kentucky by 1800. Breeds that influenced the Mammoth Jack include the Maltese, the Baudet du Poitou, the Andalusian, the Majorcan and the Catalan. Measured from the ground to the withers The withers is the ridge between the shoulder blades of an animal, typically a quadruped. In many species, it is the tallest point of the body. In horses and dogs, it is the standard place to measure the animal's height. In contrast, cattle a ..., Jacks (entire males) must stand at least , and jennies or jennets (females) at least in order to be classified as mammoth size. The American Mammoth Jackstock Registry has more stringent re ...
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Romulus (donkey)
Romulus is the world's tallest living donkey, as certified by the Guinness World Records. He is just over 2 2/3 times as tall as KneeHi, the Guinness World Record holder for shortest donkey. He is owned by Phil and Cara Barker Yellott of Adrian, Michigan. Romulus is an American Mammoth Jackstock gelding. Romulus has a brother Remus, who is just shorter. Overview Romulus is years old and has been measured at from hooves to withers. Romulus weighs about . Romulus and Remus are American Mammoth Jackstock donkeys, the world's largest donkey breed. American mammoths were developed and utilized for their potential to produce large mules when cross-bred with horses. Guinness World Record On February 8, 2013, Romulus was measured for the Guinness Book of World Records. His paperwork was received in London and certified by Guinness World Records on May 13, 2013. References

{{reflist 2004 animal births Individual donkeys Individual animals in the United States ...
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