My husband and I adopted a 4-5 month-old lab/australian shepherd mix from a shelter about a week ago. We try to exercise her as much as possible as she can get very hyper. Today she started barking uncontrollably at my husband and I when we were eating a snack on the couch. She had already gone potty and we were playing with her and giving her attention. Then my husband said "NO!" in a loud voice and she jumped on him and then he pushed her away (even though he knows this is a bad thing to do - I have told him not to push her as it is another form of attention). She then went crazy and started running around our living room as fast as she could. She has barked at us before but never ran around like crazy like that. Wondering if anything is wrong with her?