I think I was fortunate with my girls. Both of my female normals were very aggresive at the pet store I got them from They were a little feisty at first, but with short but frequent handlings in low stress situations they calmed down fast. They may have struck a lot but ive only been bit by the older one once, and the younger one just caught me with a tooth while I was assist feeding once. Nothing like they were that first month at all.