Canine Behavior/aggression


I have three spade/neutered shit tzu dogs. Two 13 year old females and a recently acquired 7 year old male. I have had the male for only four months. The owner was excellent but, can no longeer keep the dog so I have him. He was in a home for 6 of his 7 years just with himself as the only pet. When he moved in with us I noticed he began to lay in front of the food dish. One day one of our female dogs went to eat and a fight broke out. The female has always been leader of the pack so to speak in this house. All dogs, visiting and permanent know that she is lead. My husband and I thought he was testing the waters. We decided to put two food dishes down. That only made him on edge. A horrible fight broke out a few days ago. My husband and I had to physically get involved. Yes, I know that was stupid but it saved my oldest dog from serious harm. We feed them separately now. The two females together and the male alone. I heard him growl at the lead dog again tonight. I am afraid their is a dominance problem ahead. I don't want to give him up. I have already grown to love him. What should we do? Are their signs to see that he is dominant aggressive? He gets along great with the other female. She backs down when he growls. At times he gets along with lead dog. They sleep and play together.

I can't see anything from here and it's extremely abnormal for male domestic dog to not acquiesce to a female, but not uncommon.  The Shih Tzu is a breed that is normally quite docile and accepting of other dogs HOWEVER I have seen rank opportunism (toward other dogs and even toward people) in this breed.  

At age thirteen, the bitch is really not able to hold her "place" in the social hierarchy (in the dog culture) and this newcomer might very well be threatening/testing her.  You need the intervention of a certified applied animal behaviorist (CAAB).  How well socialized this "new" dog is to other dogs is something you don't know and might be playing a role here; his past life experiences are unknown, training, etc.  The evaluation of his temperament and observation of body language among all three as they are in the room together must be done by a professional.  It is not impossible to "fix" this but it might be complicated and I can't teach you how to do it in a text box (especially without being able to SEE all these dogs together).

To find a CAAB see the following sites:

Do this ASAP.  Meanwhile, continue to feed them separately; remove toys and special treats (to prevent resource guarding, you don't want to allow anything to increase this behavior).  Put a house tab (very lightweight leash with handle cut off) on the newcomer (only when you are at home).  If he growls, make no eye contact, say nothing, pick up the leash (within five to ten seconds of the growl) and put him behind a closed door for about 30 seconds.  Do this repeatedly if he growls or exhibits any obvious (to you) behavior that suggests a sudden "attack".  When you bring him back into the room, hold onto the house tab for a few minutes until he is visibly calm, ask for "sit" and praise, let go of the tab.  Do not allow the three dogs to be alone together for any reason without your strict supervision.

Canine Behavior

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Jill Connor, Ph.D.


I have spent my entire professional life rehabilitating the behavior of the domestic dog and I can answer any question regarding any behavior problem in any breed dog. I have answered more than 5,000 QUESTIONS on this site in the past (almost) eight years. If you are a caring, committed owner and need advice, I'm here for you. I am personally acquainted with my colleagues (Turid Rugaas, Ian Dunbar, etc.) who were members of an elite group in EGroups that I founded: K9Shrinks. THERE ARE NO QUICK FIXES for serious behavioral issues; not only is it unprofessional to offer same, it is also unethical. IF I ASK YOU SUBSEQUENT QUESTIONS, I NEED YOU TO INTERACT WITH ME. More information equals more credible answers and a more successful outcome. If you want ANSWERS THAT WORK, participate in any way I request. I'm quite committed to working on this site for YOUR benefit and the benefit of YOUR DOG. Help me in any way you can.


30 years of solving serious behavior problems in domestic dogs; expert in dog to human aggression; Internet columnist for for 5 years; former radio talk show host, WHPC.FM, Garden City, NY "Bite Back" (1995 through 2000). List owner, international animal behavior experts, Seminar leader: "Operant Conditioning and Learning"; "Aggression in The Domestic Dog"; "Solving Problem Behaviors" -- conducted for various training facilities on Long Island from 1993 through 2000. Former clinical director of "Behavioral Abnormalities" in conjunction with Mark Beckerman, DVM, Hempstead, New York.

Member, APDT (UK); Psychologists in Ethical Treatment with Animals

Harcourt Brace Learning Direct: "The Business of Dog Training" "The Fail Safe Dog: Brain Training, not Pain Training"

Ph.D., UC Berkeley

Past/Present Clients
Board of Directors: Northeast Dog Rescue Connection; The Dog Project; Sav-A-Dog Foundation; etc. Pro Bono counselor: Little Shelter Humane Society My practice is presently limited to forensics. I diagnose cause of dog bite, based upon testimony before the Court, for attorneys and insurance companies litigating dog bites, including fatal injuries. I also do pro bono work for bona fide rescue organizations, humane societies, et al, regarding such analysis in an effort to obtain release for dogs being held for death in municipal shelters in the US.

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