I'm still not clear on the use of 'feral' here. If you are meaning when am I more like an animal than an anthro then I'd have to say never. My anthro side is me, and like me I'm always a little animalistic, but never on all fours acting like a wolf....
Okay maybe when I'm playing around and acting goofy, but I wouldn't call that feral, to me feral means acting wild, like a true wild animal ie feral. Now in that repect I do get pretty feral when I'm in a fight, and thats not often since I never pull punches, if sommeone wants fight me seriously I don't care about fairness or rules, I'm like a beast out for blood. Because of this reason I try to avoid fighting at all costs.