hi everyone my name is sean and im 23 i have just adopted a puppy from a shelter and i loove him so far. so i got him on saterday 2 days ago hes a boxer hound mix hes estimated 11 weeks old. my problem is i just took him to pet smart to get him some new toys and a spiral steak and tie out, a new chew toy and a mini rib bone which he absolutely loves. but i noticed after i gave it to him and went to pat him he froze then growled at me. my gf who has had dogs before went to pat him and he growled at her she grabbed his collar and yanked him away from the bone and took the bone away. so me trying to make the dog realize we dont want to take it away and want him to have it i took it and put it in front of his face so he could see i wanted to give it to him. i then gave it to him and started patting him he seems to be 100x better about it but want to know if this is something i should be worried about or is he still adjusting to not having to fight with his brothers for stuff? any consideration is greatly appreciated and i and looking forward to many discussions and chats with you guys thnx for reading and thank you for your time.