I have 3 dogs. I have an almost 7 yr old Lab/Anatolian Shepherd cross-the boss. I have an almost 6 yr old beagle/boxer mix-the pacifist. Then I have a JRT/American Staffordshire mix that turned 1 on the 2nd of this month. My question is what would make the most hyper dog (JRT mix) I have ever owned suddenly become super clingy? To the best of our knowledge there have no altercations. She, Raven, is normally very feisty. She is my first terrier, so I don't know what's normal. Advice?