So I am completely new to this forum and the whole GSD thing in general. I rescued a gsd/lab mix from a local animal control facility She is either completely sweet or in all out attack mode. I have only ever owned cocker spaniels in my life, so this is totally different!!! Can anyone help me understand this breed and what tactics work best? I know they love to work- is there a particular job I can give her to make her feel useful? And how much exercise/ stimulation should she be getting at 9 weeks? Last night she was a nightmare for an hour before she went to sleep. Growling, biting, and needless to say I have plenty of wounds:/ Then we woke up today and it was round two...and now she is asleep again! I'm pretty sure there is a link to the fatigue and terrible biting, but I would love some feedback!!! Thanks!