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.

2023年7月14日 · Also known as American Mammoth donkeys, the American Mammoth Jackstock is the world’s largest breed of donkeys. They can be easily distinguished from others due to their large size, big heads, and long ears, longer than most others. Mammoth donkeys measure from a minimum of 14 hands to the largest being 17 hands.

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 ...

Mammoth Jackstock is the world’s largest breed of ass. They are tall and sturdy, with substantially thick legs and large, well-made massive heads. Their ears are one of their outstanding trademarks often measuring 33 inches from tip to tip. The primary function of American Mammoth Jackstock has always been to produce draft mules.

American Mammoth Jackstock are the world's largest breed of ass. The breed was developed in the United States through the cross-breeding of imported large European breeds (predominantly from Spain), and to a lesser degree, native American and Mexican stock.

A George Washington actor stands with an American Mammoth Jackstock donkey. Between 1830 and 1890, several thousand large asses were imported from Europe, broadening the genetic base of the breed. The Catalonian ass from Spain was of primary interest to American breeders, but the Andalusian (from Spain), Maltese (from Malta), Poitou (from ...

The American Mammoth Jackstock is a unique heritage breed of large donkey going back to the late 1700’s. The Livestock Conservatory now has the American Mammoth Jackstock listed as an endangered breed. We know that Jackstock breeders selectively breeding for quality mammoths with foundation bloodlines are becoming just as rare.

2019年4月19日 · A British sanctuary is home to this massive donkey which is set become the biggest in the world. The creature, named Derrick, is a staggering 16.3 Hands (5ft 7ins) tall and is still growing....

Black in color, although not quite with the fine-textured haircoat of the Catalonian, these jacks contributed size and bone to the Mammoth. They were often described as “sluggish” in disposition, but there is also the possibility that they were some of …

The largest living mammoth donkey on record today however, stands at 17 hands and resides in Waxahachie, Texas. The North American Saddle Mule Association and the American Mammoth Jackstock Registry have worked to keep the Mammoth Jack from becoming extinct.