Anger is used as a protective mechanism to cover up fear, hurt or sadness. Anger becomes the predominant feeling behaviorally, cognitively, and physiologically when a person makes the conscious choice to take action to immediately stop the threatening behavior of another outside force.
Donkeys are grazing animals, just like horses. In the wild, they mainly graze on grass. However, they also eat straw, tree leaves, bark, some flowers and brambles. Donkeys that are are raised by humans are fed hay (dried grass) when the grass is not growing. Donkeys love eating bread, peppermints and ginger biscuits, but these rot their teeth! Facts About Donkeys.
You will still need to provide good quality hay, and some grain as a supplement (oats, 9-10 % protein feed in small amounts). The donkey will need hoof care, worming and vaccinations as would a horse. The total cost may not be as low as half, but your feed bill itself will be lower.