Mammoth

The mammoth donkey, more formally the American Mammoth Jackstock, is a large donkey breed developed in the United States to sire strong working mules from horse mares. Its foundation drew on large European and Mediterranean jacks, with American breeders selecting for height, bone, length of body, and a steady disposition. Registry standards use minimum heights, with jacks expected to stand taller than jennets; many animals are black, brown, sorrel, gray, or roan, sometimes with light points or spotting. Long ears, a deep body, and substantial joints help distinguish the type from smaller standard donkeys.

Mammoth donkeys need the same conservative diet as other donkeys, but their size makes training and facilities especially important. Fencing, gates, stocks, and trailers should fit an animal that may outweigh many ponies, and young stock should learn to lead, tie, pick up feet, and load before they become difficult to manage. Large jacks used for mule breeding require experienced handling and careful matching to mares. Sound feet, straight legs, good fertility, and calm behavior are more useful than height alone, particularly for breeders trying to preserve working jackstock.

Colors: Black, Black Nlp (No Light Points), Blue-Eyed White, Blue Roan, Brown, Dark Brown, Dun, Frosted Roan, Gray, Ivory, Red Roan, Spotted Black and White, Spotted Brown and White, Tricolor (Black Brown White)