Just a thought, but since you said that he has now growled at and nipped towards your wife and that is a new thing, have you taken him to the vets to be checked out? An underlying illness MIGHT be leading to the increasingly aggressive behavior.
Also, after being crated while you are at work all day, he may have a lot of pent up energy/anxiety that is being turned in to aggression. Is he getting enough exercise (walking?)
Last edited by Rhetts_mama; 06-15-2010 at 10:57 AM.
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