A Google Play application includes 3D models made by people on deviantArt as paid content, PLEASE make sure YOUR models or accessories weren't ripped by force and transferred into the app.
We have found out the "EasyPoser" application on Google Play is ripping MMD model data and including it as paid content (you need to pay to "unlock" them, they are also making big money on ads).
(After choosing the model you should click on the head and then you'll have the option to look at the accessories, please look if you recognize any of them so we can reach other affected modelers!!! They seem to target deviantArt as their model source)
The animal ears were made by scratch by my close friend, they also have horns and lots of hair they are charging money for. The ears were uploaded on deviantArt only, so it's very likely they are