[mastifflover]

One other thing do not use his crate for time out. It should not be used for punishment otherwise you will create another problem for yourself. The dog will not want to go in his cage because he associates it with being a bad place it should be his safe place. Yes Yes Yes to more obedience training and socializing. The pup must know you are the top dog and what you say he does. Socializing small dogs is really important they can be very snappy and aggressive do not allow it. It is hard work but will be well worth the effort when you have a well behaved dog that you do not have to worry about