[i<3my_yorkie]

My Yorkie, Bella, will be 5 in October. She's always been very lovable and calm. Since I moved back home with my parents 8 months ago, she has become very aggressive towards my dad. If he gets up to walk anywhere in the house she runs over to him, barking like crazy, biting his legs. She has even made him bleed once. If he is sitting in his chair she jumps in his lap and wants to cuddle. I'm not sure what to make of this behavior.

Does she need more exercise? More affection? I'm at a loss here and it worries me that she is so aggressive towards a member of my family. Any advice is very much appreciated!

Thanks!