My husband and I are new Vizsla owners, we got Ava when she was 8 weeks old, she is now 6 months. All her baby teeth are gone and she has been spayed. For some reason Ava won't stop biting, she jumps up and bites us on our backs, legs, arms, etc. There is no provocation for these nips if we turn our back while she is begging for food as we have been told to do she bites in the back or our butt!! Nothing seems to work, yelping did nothing, putting her in a time out in her kennel does nothing, we go for an hour long walk a day and she spends a lot of time playing in our yard so I don't think she is bored. She also grabs our shirt sleeves and pulls us places, and then bites our wrists with her entire mouth. Please help.