• What could be causing my dog to growl and snap at people in the house, or corner them and just be aggressive? He had always a sweet and shy puppy.

    Aggression is a serious issue that needs to be addressed as soon as possible. There can be a few causes of the aggression including behavior change, pain, or an underlying medical issue.

    I recommend that you take him into see your veterinarian. He/she can examine him and run some laboratory tests to help rule out pain and any underlying issues. If there is an underlying issue then treating the problem can help to improve the aggressiveness.

    If there is no underlying issue then you veterinarian can recommend a behavior modification treatment plan that is specific to your pet and his environment. 

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