I have a 3 1/2 year old chi. He went to puppy kindergarden and was well socialized but lately he has met his quota of new friends and does not like most new people. He is also getting nasty when he doesn't get his own way. We hit his nose or spray with water and tell no when he does it but will bite viscously. He wants to go everywhere with us, and we still take him, but now I am always afraid someone will come up to him without my looking and he will bite them. My most important concern is I am having a baby in 3 mos. I know to let him smell something of baby's before I bring him home. But I don;t know if he will be ok with new baby. He usually puts up alot with babies, children, but by the end of the day he is exhausted and wants to be alone, or his tolerance gets short. ?? Help what to do?