Mammoth Jack Donkey

Current Uses: Pack animals, siring, and show.

Appearance: According to the American Mammoth Jackstock Registry, "Jacks a minimum of 14.2 hands (58") tall and jennets a minimum of 14 hands (56"), plus girth and cannon bone measurements that meet the requirements, are eligible for registration, as they were when the registry was created in 1888. Animals in these size ranges represent a significant number of the Jack Stock population. However, the model jack 200 years ago, and today, would be no less than 15 hands (60") tall. He should have good width, depth and length of body, a strong loin and full hip. The neck should be well muscled, but not excessively thick, and of proportionate length. The feet should be large and well cupped. Bone should be of good size, flat and clean. The legs should not be fine in appearance, resembling the leg of the Thoroughbred horse. The head should be well shaped and not of extreme length or thickness, tapering to a relatively fine, rounded muzzle, and be in good proportion to the body, with large wide set eyes, and well placed long, thin upright ears."

Average weight: 800 - 1000 lbs.

Lifespan: 30 - 50 years

Grooming: Mammoth Jack Donkeys are groomed in the much the same manner as horses. Hooves need to be trimmed to keep in shape. Hair can be brushed but only on warm days so as not to disturb the hair’s natural ability to insulate the animal. In the summer, donkeys have the tendency to take dust baths.

Diet: Donkeys are native to sparse deserts, therefore they require vegetation that is low in protein and high in fiber such as Timothy Hay or Bermuda Hay. A salt block should always be available for mineral supplements. Clean fresh water should also be available at all times. Treats like bite-size carrots can be offered sparingly. Donkeys enjoy eating and if allowed to self-feed will become obese and susceptible to various health risks.

Housing: Donkeys are grazing animals and require pasture for food and fresh air. The recommended pasture area is an acre per donkey per month. Mammoth Jacks require slightly larger areas. A barn or similar enclosure must be available to shelter them from harsh climates. Donkeys do not like rain and snow because they easily chill and become susceptible to disease.

Health issues: A donkey’s health is dependent on its habitat and nutrition. They are typically hardy and resilient but can suffer from health problems if overfed. Vaccinations, de-worming medications, and hoof care are essential in keeping the donkey clean and healthy. The care and monitoring of a veterinarian is recommended.

Behavior / Temperament / Activity level: Donkeys have become popular as pets and companion animals, even as guard animals because of their high intelligence. They became notorious for being stubborn, although this stubbornness is said to be the result of their strong sense of self-preservation –- no one can force them to do something they perceive as a threat to their survival, especially going into water.