
Yep, normal behaviour. My 21/2 yr old GSD bitch let our new little boy GSD do absolutely anything. Just rip stuff out of her mouth. He's now 15 months, and since he turned about a year old she puts him in his place. She still often lets him get away with it if she feels like it, but if she doesn't watch out. She is definitely in charge, and they have a fabulous relationship. I felt so sorry for her to begin with, like you, but don't worry it will all work out.
His motto was the following (and still is if he thinks he'll get away with it)
1. If I like it, it's mine.
2. If it's in my mouth, it's mine.
3. If I can take it from you, it's mine.
4. If I had it a little while ago, it's mine.
5. If it's mine, it must never appear to be yours in any way.
6. If I'm chewing something up, all the pieces are mine.
7. If it just looks like mine, it's mine.
8. If I saw it first, it's mine.
9. If you are playing with something and you put it down, it automatically becomes mine.
10. If it's broken, it's yours.

Kat