Savior Quest: Tales of the Conqueror - The planet is called Aeon and something really bad happened there. A Dark Quen cast a spell on it so all the male creatures of all kinds turn into raging animals. They don’t even remember who they were previously, and soon all of them will be affected. That means no males to repopulate the same part of the world. Somehow your creature has to stop this and make things get better so the world won’t end in chaos, as well as soon no more sentient creatures will be left if you don’t succeed.