[jlhnokc]

If she is grabbing and lunging at you and making contact with her teeth, she doesn't deserve to be off leash at all...Put a leash on her and as soon as you see that look in her eye, even before she has a chance to react, you redirect her to some commands...Also, what kind of exercise is she getting? This could be built up frusteration if she isn't getting enough physical and mental exercise and this is her outlet for it.