My Sophie is 7 months also and when she gets growly and barky I think it's because she plays too hard sometimes and gets too tired so she needs a puppy nap. Sometimes it's good to make them rest a little bit because they use up so much energy playing and running around. Sometimes when they are overtired they tend not to listen well and will get possessive of their toys. A nap usually does the trick for Sophie. After a short time out she's her cuddly self again.
Jackie
Mom to Sophie & Hazel
