![Fez, Morocco - August 30, 2009 - A tannery worker stacks dyed sheep skin on a donkey in the world's oldest leather tannery. The hides are first soaked in diluted acidic pigeon excrement and then transferred to other vessels containing vegetable dyes such as henna, saffron and mint (Nicole Hill / The National) *** Local Caption *** NH Tannery31.jpg](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/DCLEHXHB6WFDOQPPJZY2VG52FA.jpg?smart=true&auth=cabe5daeab058343fd4c0814d2ba0948c79e7421deaca60ca870faea3a81c9d7&width=400&height=225)
Donkeys are targeted for their skins, which are used in alternative medicine. Nicole Hill / The National
Donkeys are targeted for their skins, which are used in alternative medicine. Nicole Hill / The National
African ban on donkey skin trade can lead wildlife crime crackdown
Shipping companies and air cargo operators called on to step up fight against illegal trade