Collect coins, open chests
You will be able to earn coins by simply playing the game. When you go hunting, you will start to earn them. But it's really about just remembering to use them. You can use them for different things, but the best thing you can get is chests.
Each chest will give you random reward items. It could be some new fur or eyes for your animal, or it can be something else like an emote. And yes, you can use emotes in this game. In particular, when you're ready to attack, your beast of the wild will let prey know that you're on the prowl in epic fashion.
You normally get three items per open, and you can rack things up pretty quickly if you start gathering up coins. The good thing is that the animals you can hunt early on are easy to take down. This is a nice way to start getting some of that cash, so start being predatorial you beast.