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small dog aggression

  1. HELP!! 7 year old chihuahua won't stop attacking new puppy

    Dog Training Forum
    our chihuahua has always been well behaved around our kids other people and other dogs. no aggression. we got a medium sized four-month-old puppy. she will be large, eventually. she is sweet and well mannered, especially for a pup! chihuahua will not stop growling and attacking her. what can i...