The past couple of days Harley has been biting at our feet & hands and won't just sit and be the nice little lap dog. He barks at us and gets into everything. Unrolls the toliet paper roll & such. He runs from us when we try to catch him. I've about had it! All the while he is wagging his tail.....which makes me think he is playing but it is totally unacceptable! Help-any advice?