TFX is right. I had a pup off Gr Ch YellowMan who was shy from day one. She would walk but wouldn't work, she had the biggest smile when you called her name. I hated that bitch, every time I or any one petted her she would piss. One day my older brother came from out of town and petted her and she liked him and didn't piss. He took her with him for a two years and brought her back. The bitch never changed and ended up getting culled. My advise is cull that dog or give it back to whoever you got it from especially if it tried biting you.