Hello, My wife and I have a 1 year old Black & Tan (Eli) which we love very very much and have a very close bond. We have joint custody of my two girls 18 & 16 and they spend every other week with us. We also have a 5 year Westie - Kalia. Eli and Kalia get along great except when they see a squirrel Eli wants to dominate the window or door. Both dogs are excited to see the girls when they arrive and in general there have been no problems but there have been a couple occasions where he has bitten each of the girls while they were petting and just giving him some love. Tonight he bit my daughter after he had rolled over on his back so she could rub his belly. He has never drawn blood but they think he's psycho and I'm just confused by the whole situation. Looking for some advice.