I have the FRIENDLIEST panther male in the world but once when i was feeding him a worm a couple weeks ago (he was 14 months old) he wanted it so bad he shot at it from about a foot and a half away and grabbed it with his tongue along with my finger. When taking the worm in his mouth he bit down on it along with accidentally getting my fingernail. Luckily my fingernail protected me but it still felt like a SUPER HARD pinch. After 5 min, i couldn't feel anything but i knew that if it wasn't for my nail, it would've easily torn through my finger. But i also had the same thing happen to me with my other panther about 4 months ago when he was 4 and half months old panther male that accidentally bit me in the same scenerio also.It felt like someone poking me. I trained him however because he used to be aggressive (hence my username) and he is very friendly now. When he was aggresive he would never bite, just gape. Sometimes they gape and headbut but they don't bite that often. Mine have never purposly bit me. My vieled was the only one of mine that ever headbutted at me but she stopped after a while.