This blog looks at the facts behind canine aggression and fatal dog attacks. The data used here largely comes directly from Jim's on-scene and personal investigations into these cases.
Wednesday, March 23, 2011
Resource Guarding Aggression
Friday, March 18, 2011
Earned Bite
Wednesday, March 2, 2011
Update-back on line after too long
Aggression is an adaptive behavior that allows a dog to alter his environment in order to increase its chances of survival. Aggression is defined in textbooks as behavior that 1) establishes access to or protects resources, 2)establishes or alters social standing, or 3) defends against perceived threats.
Defense against perceived threats is probably the most common of these three factors in aggressive displays toward humans. Animals have three basic responses to perceived threats; freeze (stand still and hope the threat passes), flee (RUN AWAY!) or fight. This applies to dogs, horses, or humans.
The perception of threat is affected by a number of factors; experience, training, environment, and adaptability to novel situations. Dogs, horses and humans perceive threats differently. One’s place on the food chain has a lot to do with that perception; as prey animals, horses tend to perceive threats in plenty of innocuous situations. For now let’s look at the dog’s perceptions as we understand them.
When a dog is presented with a Scary Thing, a perceived threat, he chooses a response based on his perception of the level of threat and the potential avenues to relieve that threat. Dogs that simply run from a threat don’t present a concern to investigators-they are absent from the conflict. Freezing is likewise a benign response. The choice to fight, however, brings conflict with humans, and the involvement of the investigator.
A dog that chooses the fight response is not limited to an all out fight to the death. Fight, as a response to a perceived threat, is moderated based on the level of threat perceived. Social behavior has evolved to produce a range of postures, vocalizations and actions that other animals perceive as defensive and help avert actual contact.
The initial level of fight is an aggressive display. For dogs this includes body position, raised hackles, eye focus, exposing teeth, growling, and making initial lunges toward a target. If this display mitigates the threat, makes it go away, then the dog deescalates and the situation returns to neutral. If the simple display does not effect a solution, then the conflict can proceed to contact. The dog chooses to escalate, or not, based on the continuing presence of the perceived threat.
Aggressive displays are reinforced by success-if they result in the departure of a Scary Thing then the dog will try them again for another Scary Thing. Continued success means that the behavior will be repeated. But success is strongly based on trial and error. Success is based on a dog’s perception of the chain of cause and effect, a perception that may not reflect human reality.
A classic case of perception reinforcing an aggressive display is a dog’s interaction with a Postal or delivery person. A dog is at home and sees a potential Scary Thing (unfamiliar person) approaching up the walk. The dog starts to bark, posture, and in general show an aggressive display. The delivery person comes to the door and deposits their item. The delivery person walks away, ignoring the dog. The dog, however, is not aware that the delivery person was leaving anyway, and finds that their aggressive display made the Scary Thing go away. Success! The behavior worked.
The next time the delivery person comes up, the dog tries the previously successful behavior. The delivery person leaves, and the dog perceives that it works again! Now we have a successful behavior that has been reinforced by repetition. With enough successes it starts to become a default response to the approach of an unfamiliar person.
Later, the same house is approached by a child selling cookies. The front door is ajar. The dog sees unfamiliar person approach and begins an aggressive display. This time dog is not restrained by the closed door. The approaching child sees the aggressive display and runs. The dog reacts, the dog’s prey/pursuit drive adds in, and we end up with a bitten child.
Preventing this chain of events is a separate topic involving socialization and training, but the end result is that the dog is labeled aggressive. But is it, in the sense of being a dangerous, mean, vicious animal? Not really. Dangerous, mean and vicious are human terms, placing human values on an animal’s behavior, or more exactly, a dog’s response to a perceived threat. In our example we have a dog that has been set up for failure by the combination of a lack of human guidance and misapplication of a survival oriented behavior.
A similar series of events seems to be magnified in dogs that are habitually chained. If a dog feels threatened, their first response is usually to try and flee the Scary Thing. The chain leaves the dog out in the open, with no place to hide, and no place to run. Freezing may work-the dog cowers down and doesn’t respond and the perceived threat may just go away. But the Scary Thing may keep coming-for instance it may be a passing person who has to come close, but not necessarily all the way up to the dog. The dog, fearing that the freezing isn’t working, goes to Plan B: an aggressive display. Sure enough, the Scary Thing goes away. The fact that the Scary Thing (stranger) had no intention of approaching or harming the dog never enters into the equation. Dogs perceive situations as immediate cause and effect. The aggressive display worked.
Constant reinforcement of this success results in a typical fearful chained dog. The person feeding them may be able to approach easily, but others are repelled by the aggressive display. Now, add someone without the ability to recognize the warning signs or who’s recognition abilities are impaired by drugs, alcohol, or a lack of knowledge, and you have an attack.
If the same habitually chained dog gets loose it may be confronted by a Scary Thing while not restrained by the chain. The dog has few tools to handle novel situations due to a lack of socialization, so he defaults to the successful behavior strategy from before-an aggressive display. In this situation the dog is much more likely to attack and the result is a bite. Is this a vicious dog? We may perceive it as such, but the behavior is the result of a series of events that has its roots in the human behind the chain. In both cases there has been a human cost and the result is a need for control, management, and responsibility.
Wednesday, January 23, 2008
2007 attacks part 2: The breed question (or not?).
I am amazed at the attention my post on the dog fatalities for 2007 generated. My friend Karen Delise (author of the great book “Fatal Dog Attacks; the stories behind the statistics”-READ IT!) called and we discussed at length the subject of breed citation. Understand, we share information on a regular basis, and both work hard to make the best decisions and assignments of contributory factors (I think) of anyone out there. And the question of breed identification, listing and importance is a real late-night toss-and-turner for both of us.
I can’t-and won’t-speak for Karen, but I do want to share some of my thoughts, concerns, and ramblings on the breed question.
First off, I work very hard to be cautious in assigning a breed label. If the dog is listed on recognized registration papers as breed X, then the assessment is relatively easy. Of course we all know that there are those registries out there that are meaningless, so as such I look for recognized, real registry papers.
Purebred dogs are by no means the norm in these cases. Then we have to match photos, owner claims, and when I can hands-on examination of the subject dog, and the issue becomes a bit dodgy. One dog may be clearly, say, a Lab. No question, it is just oozing “labbiness”. On a scale of one to ten, this dog is an eleven in the class of “Labrador Retriever”.
But what about the sixes, fives, even fours? If it drops off enough I readily tend to classify the dog mixed breed, or better “NPB” for no predominant breed. Sure, there are those new DNA tests that are being sold to “..tell you the breed makeup of your dog…”, but the genetic scientists I have spoken too generously call those tests “well marketed consumer products.” In other words in the scientific class of those late night infomercial products.
Sometimes we have to make judgment calls. This truly affects the accuracy of the numbers. Forget trying to go as far as “Red-nosed Pit”, “American Pit”, or any of the more discriminative labels. It often just can’t be done.
More sinister is the use of breed statistics to establish “proof” that just isn’t there. Sure, a dog that kills someone may be a Left-Handed Chilean Truffle Hound, but how much does that have to do with the attack? Usually not much.
The reality is that fatal dog attacks are strongly multi-factoral. Dr. Randy Lockwood of HSUS called it “…a perfect storm…”, and I have to agree. A fatal dog attack is the result of a conglomeration of many things, all joining up in one perfect storm that goes directly against thousands of years of physical and social evolution. After all, humanity selected dogs as companions because the DIDN’T present a threat, and because they DID evolve as part of and hand in hand with human social units.
Problem is, some people, often media, seize on the breed of the dog and THAT’S IT. End of report. End of listening to the facts. And that does a disservice to all of us, dogs included.
If I just completely ignore breed, I lose credibility. No one is going to buy the “It’s just a dog-leave it at that” statement. Someone is going to trot out breed, usually in the first reports, and then breed becomes the elephant in the living room.
Yet listing breed, as I did in the last post, leads to people seizing on that factor and twisting the data to fit their pre-conceived notions. If we give irresponsible reporters an opening to seize on any easy explanation, even if it is wrong, they will. Boil it down to an eight second sound bite and move on. And then politicians and enemies of dog ownership use that to further their arguments. So we are screwed.
So what am I doing to do? I’m not sure yet. I refuse to depart from the data-that is where I have to be unswervingly honest. Part of the data stream is breed. Yet that is not the only part, not even the most critical part. Maybe just listing the breeds involved in general terms for the year instead of numbers of each breed? That may be the answer, but then the next question is always “How many X?” Trying to redirect then looks like evasion.
I welcome comments and opinions here. It is not an easy question, and I don’t have the answer.
JimSunday, January 20, 2008
2007 - Fatal Attack Facts and Figures
Here is the full update on the thirty-three fatal attacks by dogs in the US over the year 2007. Look through the list, and then we will talk about what we see.
1 - 1/12 –
2 - 1/16 –
3 - 1/24 –
4 - 1/29 – Escambia Co, AL: 18 month old girl-Rottweiller-intact male-tethered.
5 - 2/16 – DeKalb, GA: 2 year old girl-1 Pit Bull mix, 1 Boxer X Bullmastiff mix-intact male, female pregnant-not chained
6 - 3/20 –
7 - 3/23 – Combine, TX: 2 year old girl-2 Pit Bulls-intact male, female with puppies-chained.
8 - 4/23 –
9 - 5/13 –
10 - 5/25 –
11 - 5/25 – El Paso, TX: 95 year old woman-Doberman, German Shepherd-both intact males-no chain
12 - 5/26 –
13 - 6/17 –
14 - 6/29 –
15 - 7/12 – Carroll Co, GA: 5 year old girl-Rottweiller-intact female-chained
16 - 7/23 –
17 - 7/29 –
18 - 8/16 –
19 – 8/18 –
20 - 8/ 31 -
21 – 9/14 –
22, 23 - 9/13 – Iosco Township, MI: 56 year old woman, 91 year old man- 4 American Bulldogs-all intact-no chains
24 - 9/25 – Boger City, NC: 2 year old boy-(2) German Shepherds-chained-intact males
25 - 10/2 – Middleburg, FL: 42 year old woman-(2) Pit Bulls-neutered males-no chain.
26 - 10/7 –
27 – 10/15 – Pontotoc County, OK: 65 year old woman-mixed breeds- (5 to 7), breakdown unk. Loose pack.
28 - 11/01 –
29 - 11/03 –
30 – 11/13 –
31 - 12/13-Dorchester County, SC:
32 – 12/17 – Rabun County, GA: 61 year old woman-Pit Bull-male-chained.
33 – 12/25 – San Bernadino County, CA – 45 year old woman-unknown pack of loose dogs.
Looking at the numbers here, a few things jump out. Twenty-six of thirty-three involved intact animals. Fifteen of thirty-three involved Pit Bulls. Ten of thirty-three involved chained animals. Does that mean intact Pit Bulls are chained up and waiting to kill? Not hardly.What I see these numbers indicating, based on my on-scene investigations, is that irresponsible owners tend not to spay and neuter, tend to chain their animals out for extended times with little or no socialization, and that Pits are currently popular with owners who maintain their animals with less wisdom and care than most of us. Once again, it's the two-legged problem behind the four legger that precipitates the problems.
I also have to point out that eighteen of thirty-three were kids, all eleven or under, mostly under three. If ever there was proof of the need to supervise children with dogs - ALL DOGS - this should be it. Don't expect the DVD player and video games to keep them safe. Pay attention and be a parent, not just a piece of furniture.
Thursday, January 3, 2008
Canine PTSD in disaster and war
Happy 2008 everyone! Along with my good wishes to all, two and four legged, I have a bit of a different post today.
Recently I was talking to friend and author Julia Szabo, who's great blog is at http://www.fetchdog.com/blogs/nosetotheground/General (and of course http://www.pet-reporter.com ) about dog aggression, and the case of the Blackwater mercenaries shooting the NY Times compound dog Hentish came up. For those who have not read the story, a dog named Hentish, who lived in the compound occupied by the NY Times in
There is relatively little solid information about the incident, but Julia asked about the likely behavior of a dog living in or around a military-style compound in a war zone. To answer that I had to back up almost three years to the animals I dealt with in New Orleans post-Katrina and a dog that I worked with for a time after the animal airlift from Lebanon that happened in the wake of that recent Mid-East flare-up.
Post-Traumatic Stress Disorder or PTSD is well defined in humans. According to the NIMH website (http://www.nimh.nih.gov ), “Post-Traumatic Stress Disorder, PTSD, is an anxiety disorder that can develop after exposure to a terrifying event or ordeal in which grave physical harm occurred or was threatened. Traumatic events that may trigger PTSD include violent personal assaults, natural or human-caused disasters, accidents, or military combat.”
Although the literature is less definitive about the presence of PTSD in companion animals, the dogs that I observed on the streets after Hurricane Katrina exhibited symptoms that seemed to be a canine analog of human PTSD. These animals were depressed, lacking in normal affect, startled easily, agitated, and shy of human contact. More importantly, some of these animals exhibited generalized aggression.
An aggressive response in such stressed animals is not surprising, nor unobserved outside disaster situations. Many dogs, especially those who are under- or un-socialized, default to an aggressive display when frightened or exposed to a novel situation. The destruction of homes and evacuation, even death, of the human population of
What did this mean for the dogs of Katrina? In my case, I set up a quiet treatment area, apart from the hustle of the rescue operations. The dogs got personal attention, most often after I built a working relationship through the use of non-verbal communication signals (body language is the basis for about 95% of inter-canine communication – NOT “whispering”, ESP, or other nonsense!) and let the dogs know they were once again safe. They were then introduced to other friendly, non-threatening humans and gradually returned to a ‘normal’ environment.
Did this ‘cure’ the dogs? Absolutely not. Many of these animals have had lasting effects, physical and behavioral. Some, such as Winnie (my Katrina Pit Bull rescue), still show fear during storms. Some have shown varying degrees of suspicion and aggression towards humans. Some have recovered exceptionally well.
Another personal observation, directly applicable to
As time went on he showed increasing sensitivity to loud noises (gee, ya think?) and became spooky and likely to give an aggressive response with minimal non-verbal warning signals. He trusted me, but even my daughter, a very dog-savvy teenager, did not trust him.
Rudy’s issues were too much. He was eventually transferred to a safe, permanent shelter where the handlers are skilled and accustomed to difficult animals. He will live out his life safely and in peace, but sadly is unlikely to ever transition to being a family dog. The reason? Lasting PTSD.
What does all of this have to do with Hentish and
Sunday, December 23, 2007
Fatal Attack, Boger City, NC
First off, let me give a quick shout out to Brent Toellner at the KC Dog Blog. Brent’s blog is a breath of fresh air in the world of dog legislation and fighting the unsubstantiated junk that passes for mainstream reportage of dog issues, especially those orbiting around Planet Pit Bull Hysteria. To get a balanced view of a wonderful breed visit with Brent.
Now on to the first case. This case is not unusual; in fact, I am going over this case to introduce you, the readers, to a textbook example of the typical fatal attack. This one has it all; trailers, chains, a history of escalating aggression, unneutered dogs, no public education, no response by local authorities to the early signs, and a child caught in the middle.
In reality, Karson Gilroy never had a chance. A lovely two year old boy, he had two great dogs in his family that taught him dogs were wonderful pals. His uncle next door owned a German shepherd who was tolerant and gentle with little Karson. Karson could tug, pull, and clamber all over the Shepherd. No problems, no issues, nothing but a gentle loving relationship.
Karson had his own dog too. Thirteen months old, his Boxer pup was exuberant but gentle, a good, stable family dog. Remember that-a family dog.
Three trailers away the story was different. The man there owned two Shepherd mixes. Both males, father and son. Both dogs were kept outside twenty four-seven. Both dogs kept on chains. Both dogs intact.
The chained Shepherds were known well by the neighbors. They had broken free of their chains several times. During their tours of the area they had reportedly chased several people, fought with a number of dogs, killed at least one cat and allegedly killed as many as two dogs.
The younger of the two dogs was poorly socialized, to say the least. Fearful, the owner described him as skittish and spooky. The younger dog was also the more agile escape artist. The owner said that the dog had learned to shuck out of the standard buckle collar, so he placed the dog in a choke collar. On a chain. And since the dogs barked at any passers-by they could see through the woods in front of the home, he tied them out in the woods behind the home, almost a hundred feet back into the woods. With no fence or barrier to keep other dogs – or children – from wandering up to them.
Karson typically stayed with his Grandparents while his own folks were at work. His aunt and uncle live next door, and Karson was a regular visitor, playing and watching TV with his cousins. One fine
A short time later Karson was found by a deputy, tangled up in the chain of the younger dog, mauled and bleeding. Karson was rushed to the hospital, but died a short time later.
So what can we take from this as lessons learned? The first issue here is the function of the dogs and their place in the family and community.
Karen Delise, author of Fatal Dog Attacks and The Pit Bull Placebo (www.canineresearchcouncil.com) uses a pair of terms that I also use, gladly crediting her for their development. She makes the distinction between a family dog and a resident dog. A family dog is just what it sounds like; a dog that is an intrinsic part of a human family. This dog hangs out with the kids, rides in the car, eats under the table, sleeps in someone’s bed, sneaks shoes out of the closet, and saves Timmy from the well. This is the dog that most of us who are dog people have under our foot as we read or write blogs.
A resident dog, on the other hand, is what we see far too often. The dogs are tossed in the back yard, or worse tied or chained out, and never integrate with the family. They are usually poorly socialized, have little to no training, have food tossed to them pretty regularly, may see a Vet once every year or so, and are only peripherally part of any human-canine social grouping. Perhaps the owners meant for them to be family dogs, but time got away from them. Or they were supposed to be the “kids’ dog” and the kids lost interest. Maybe they had behavioral problems that led to their exile – or maybe their exile has caused the bad behavior. Either way, they have become a sad reflection of what they could be.
And they, the resident dogs, are by far the largest group of dogs involved in fatal human attacks.
So back to this case: two resident dogs chained and unsupervised. The least socialized of the two not only chained, but also on a choke collar, set up to panic if the collar tightened. No provisions to keep unwary toddlers from stumbling into the dogs’ area. A toddler who loved his own dogs and didn’t believe that other dogs were any different. And an accidental slip of attention that led to a toddler becoming a victim in what should have been a safe environment.
Tragic? Absolutely. Predictable? Certainly. Avoidable? Without question. The dogs’ fault? Not hardly. And just the setup that Karen and I find far too often.
COMING UP SOON (and WAAAY quicker than last time- I promise!) A list of the fatalities to date in 2007, a look at the attack in Middleburg, Florida, and a discussion of canine aggression and PTSD in traumatized dogs!