http://www.yorkietalk.com/forums/showthread.php?t=31742
Read what I posted here.
First so sorry, glad that the child was not hurt badly.
I say you have a reactive dog that is going aggressive.
they are not in my opoin the same thing.
One is they react to much to something happening.
The other is aggressin and biting.
I say try a behaviourist with at letters behind thier name just not a trainer.
Keep comings and goings as calm as possible.
Put her in a down/ wait or in a kennel as people come and go.
The over excitment may be the trigger.
Joy