Hi I have a 3 year old male Shitzhu. He is unpredictable. One minute hes happy go lucky but every now and then he will snap and bite. If we touch him accidentally when he is asleep for example he will lash out and bite so we know how to avoid these situations. He wont let us groom him without being unhappy about it and lashing out at us every now and again if we try. He will go to the groomers and get his hair cut without any problems occurring whilst he's there. Perhaps the groomer is more firm with him. What I wanted to ask the forum is . Can he be trained not to bite. I don't wont to think about the inevitable putting him to sleep problem but get scared at the prospect of him biting some one else.