We just adopted a 7 month old golden retriever/Chow /Australian Terrier mix about 3 weeks ago. He is an absolute sweetheart and was great with my 5 and 3 year old up until about a week ago. He is very mouthy and barks and bites (but not hard) and growls at them for no reason. I don’t know if he is trying to establish dominance with them or what. His name is Shadow because he is a constant shadow that follows you everywhere. He sometimes walks behind me and my kids and nips at the back of our legs. It doesn’t hurt, but it’s like he just wants our attention. Has anyone dealt with this or have any words of advice on how to correct this behavior?