I have one pup left out of 4. He is 13 weeks old and I am now letting him out to run around with mom and friends within a confined area. Mom will not let him move she uses her head to pin him to the floor or her paws. Then she bites his legs or his ears and then she pulls him and makes him cry. He is not agressive towards her or even playing with her for her to think she needds to discipline him. all he wants to do is play with toys and she just won't let him. His sister came to visit on Sunday and mom did not bother her she just would lick and love on her. She has always beenthis way with him more agressive and more loving to the other 3. Is this normal?
