Does anyone have any recommendations for a dog trainer? I have adopted a 2 year old Shih Tzu mix. She doesn't want anyone to come into my house and will try to bite them. When it is just us in the house, she's a sweet little girl. We do like to travel occasionally and I need to be able to have a dog sitter come in. She was abused so I was hoping with lots of love she would calm down, Not happening so far! I would appreciate your recommendations both good and bad! Thanks.