Hello, I need your help. My Great Pyrenees puppy is 4 months and a few days ago I noticed that her back leg ( the right one ) is acting weird when she walks but mostly when she is standing on her two back legs. From afar looks like her ankle keeps dislocating over and over and she is unable to keep it stable. She didn't have a problem before with her legs so I'm very confused and concerned about it. Can you help me find out what can the problem be from the photos?what can I do to help her ?