tame animation

Yes, but you'll need a plugin. With Nerdy's Geckolib plugin, you can make custom animations for your entities, and trigger custom animations with procedures. It isn't possible to do much more than very simple animations with MCreator's built in tools.

Nerdy explains how to use this pretty well in his tutorial, but essentially, you need to download a Geckolib plugin for blockbench, (which allows you to design animated entities), and also need to download a geckolib plugin for MCreator. (Which will allow you to load these animated entities in MCreator.) Lastly, when you publish your modification, you'll need to make sure people also download the latest version of Geckolib, (a library mod that lets your custom animations work properly on Forge. It's pretty common, so a lot of people will have it downloaded anyways, just make sure to let people know it's a dependency.)