Karlee has started this biting and jumping and even chasing my two boys and nipping at their feet barking they are now getting scared of her and she knows it so she continues like haha I'm boss attitude. I get after Karlee and said firmly NO! She knows if I say no and will put her ears back and sit down right then and look at me as if to say I'm sorry...I turn by back and she's at it again! She rarely tries to play bite at me and does'nt run after me. If I see her trying to bite...she's also started to bite at my carpet I give her a chew toy or a rawhide stick and it cures it for a while. Just continue to say no and let her know that the behavior she is doing is not welcome. If Karlee continues to snap at the boys I pick her up and say NO firmly and lay her in her doggy pillow bed if she comes to me I ignore her for a few mins. She now knows if I say no she is in trouble and quits. Best thing do not let her ever get away with the behavior or it will take longer to break her. Being a puppy I know Karlee is still going to chew and do her hyper play (she took a week before she started her hyper activity now she has gotten used to us so she tries to get away with more! LOL) Just keep plenty of things to keep her busy I rotate the toys around one day I'll have a certain squeeky toy out and a couple soft toys the next day I put them up and have a different squeeky toy, a rattle type toy that she chases and her ball and rope toys. Another thing if she ever tries to bite or nip at me I get out her rope toy and play tug of war if she gets close enough to me to nip me I will say no to her and hold the rope toy out for her to play with again. Shes beginning to do a lot better. I hope my advice helps you out with Sadie I'm sure she'll start being a little princess again soon!
She's a really pretty puppy!