What is the legal effect of performing a proper Islamic slaughter (al-Dhakah) on a non-edible animal like a leopard or donkey?

Purification of Hides and Special Animal Substances

• Its meat becomes halal to eat.
• Its hide is legally purified for use and prayer even without tanning.
• It has no legal effect; the hide remains impure.
• It only purifies the horns.