Demand for donkey hides, used to make ejiao, has built a lucrative trade industry, endangering the livelihoods of those who rely on them - Half the world’s donkey population could be wiped out in the next five years, as millions are slaughtered to meet the rising demand for “ejiao,” a gelatin-based traditional Chinese medicine derived from boiling the hides of donkeys. Believed to improve blood circulation and treat conditions like anemia, infertility, and impotence, ejiao is found in powders, tonics, cosmetics, and even food products.