How to get leather in Hytale

You'd think that getting the simple stuff like leather in Hytale would be a breeze. You'll quickly find out that's not the case, as you need three different types of leather—light, medium, and heavy—to craft a whole bunch of invaluable items and upgrades, like the backpack.

So that you're not running around for an hour, mercilessly killing random animals in the hopes they drop the type of leather you need, I'll go over where you need to look below.

Given that you'll have to hunt both passive and hostile mobs...