My sheperd is just over 2years old. I am in no way a dog trainer but Maya has tought me a lot about dog behavior. I'm shore others will agree. GSD's will keep you on your feet all the time. There are a lot of way's to stop or train your dog to not bite. What works depends on your dog. I've heard people trying freezing a stick of butter and putting it on your hands so the dog will lick your hands rather then bite. ( never tried it )
What I did was when she would bite, I would grab her snout with my fingers going all the way around so my thumb and my other four fingers were on her lips, so when she would bite down she would bite her own lip. This was very affective and the biting stopped soon after doing it. And no she never Bit so hard to hurt her self.
Another thing I did was make shore I had soft, rubber toys and hard bones to help with the teething stage.
I believe bitting is a behavior that needs to be fixed fast as possible. The important thing is not to give up.
your dog has a lovely name
On topic. My Maya was a bit of a landshark, but she has calmed down ALOT from when she was a little puppy. I attribute most of the change to her diet, I moved her off kibble, onto a raw food diet. If you are feeding kibble, make sure to feed a kibble that has no artificial colours or preservatives, I am pretty sure they make dogs go insane, much like children.
The reason I attribute it to her diet, is because she is still VERY nippy, during play, and actually drew blood on my mother last night, but thats a long story. I try to teach her bite inhibition, rather than no bite, because of many reasons including her being a puppy, teething, and the fact that bite inhibition maybe harder to teach when she is an adult lol.
Now she is very good at biting, but not hurting, or drawing blood, if we play rough and I say either "Ouch!" or "off" (ouch was more of an accidental train lol), then she knows either to let go or loosen her grip. The best thing to do is use a tug toy, give her something to really sink her teeth into, rather than getting told off for biting skin.