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Thoughts of a Professional Dog Trainer

Learn about the day to day life of a successful private dog trainer in Chicago, IL. Gain insight into the challenges of being a trainer as well as tips to help you with your dog.

How to Assess the Severity of a Dog Bite

Dog Bite I had a new client yesterday that was very upset because their 5-year-old dog bit their one-year-old baby in the face. My client felt terrible because in hindsight she understands that the situation could have been avoided. The dog is a little shy to begin with, and he got cornered in the bathroom by the energetic baby. The baby ignored the signals of discomfort exhibited by the dog and approached anyway. The dog bit the baby in the face causing bruising, but no blood, tearing or puncture wounds. 

Most adults would know better and would have stopped approaching, but children often don't understand dog signals and that is why they get bitten more than adults. If you want to learn more about dog bites, you can read a fascinating book by Janis Bradley, one of my instructors at the Academy for Dog Trainers. Called Dogs Bite: But Slippers and Balloons are More Dangerous, this book tackles the fascinating topic of how overblown the hype is about dog bites. In the summary, it talks about the relative infrequency of dog bites versus other injuries: "A child is more likely to die choking on a marble or a balloon, and an adult is more likely to die in a bedroom slipper related accident."

When I interviewed my client about the facial bite I knew that the severity of the bite, while scary, was on the lower end of the severity spectrum. How did I know this? I follow Dr. Ian Dunbar's bite assessment criteria when assessing a dog bite.

  1. Level 1- Dog growls, lunges, snarls-no teeth touch skin. Mostly intimidation behavior.
  2. Level 2- Teeth touch skin but no puncture. May have red mark/minor bruise from dog’s head or snout, may have minor scratches from paws/nails. Minor surface abrasions acceptable.
  3. Level 3- Punctures ½ the length of a canine tooth, one to four holes, single bite.No tearing or slashes.Victim not shaken side to side. Bruising.
  4. Level 4- One to four holes from a single bite, one hole deeper than ½ the length of a canine tooth, typically contact/punctures from more than canines only. Black bruising, tears and/or slashing wounds. Dog clamped down and shook or slashed victim.
  5. Level 5- Multiple bites at Level 4 or above. A concerted, repeated attack.
  6. Level 6- Any bite resulting in death of a human.

So, let's look at my new client's dog bite and assess the severity. Since there was bruising, but no puncture wounds, the bite can be categorized as a Level 2 bite. You might find it interesting that a growl or "air snap" with no contact is actually considered an act of aggression in Dr. Dunbar's chart. One reason for this being included in the bite chart is that, if left untreated, this behavior often escalates into more obvious aggression. So, it appears on the aggression radar screen because it means that something in the environment is causing the dog to react defensively and has to be addressed.

There are many reasons why I took the case and was very optimistic about the chances for success:

  1. This was the first and only bite to the child
  2. It was a Level 2 bite
  3. My clients are very willing to work to address the situation
  4. My clients realize that they need to be more proactive to keep their dog and baby comfortable and this situation could have been avoided

Thankfully most of my client calls fall into the Level 2 or 3 categories. I have worked with Level 4 dogs, but the chances for rehabiliation get lower as the severity climbs.

I make my decision whether to take a case based on the willingness of the client to be rock-solid with management and positive reinforcement treatment, the history and number of dog bites, and the history of the dog's socialization and background. The worst situation is an older dog that doesn't show signals such as growling or snarling, newly adopted from the shelter without any history that has put multiple people in the hospital. The chances of success working with that dog are very low.  

Comments

 

LolaMck said:

would a bite still be a level 2 if there was no growling involved? I've noticed that sometimes certain dogs will jump up and nip but it's hard to say it was aggressive. I've gotten some pretty big bruises when this happens.

February 21, 2008 1:53 PM
 

Jeff Millman said:

That is an excellent question. In my opinion, if it can be identified that a dog is playing and has a "sloppy mouth" than that is different. In that case the dog needs to be taught to more composed and taught to have a soft mouth. I take all damaging mouth contact very seriously.

If there is aggression involved it is still a Level 2 bite. The dog does not have to exhibit all of the lower-level signals and work up to the final level of aggression. The bite severity is based on the highest level of damage. The dog with the worst likelihood for rehabilitation is a dog that doesn't show any signals before attacking. This can occur in some cases when a dog is punished for growling and learns to inhibit signals and just attack when the situation becomes intolerable vs. giving a warning and get punished.

February 21, 2008 2:19 PM
 

Dave said:

I certainly appreciate the way you reinforce the negative stereotyping of pit bulls with your choice of photo.

March 24, 2008 3:44 PM
 

Carrie said:

I must agree with Dave. I owned a pit bull for the first 15 years of my life who merely got up and moved when I was being a typical kid and yet when I was 11 I had what would be considered a level 3 bite for a Cocker Spaniel. Those who work in your field have a responsibility not to perpetuate breed stereotypes.

March 24, 2008 7:21 PM
 

Jeff Millman said:

Thanks for your comments. I did not intend to perpetuate stereotypes. I have worked with many breeds, including pit bulls. I happen to think pit bulls are very intelligent and generally gentle if socialized and raised correctly. I think if you look at the body of my work in all of the other posts (some dealing with aggression and some having pictures on the posts) you will find that I do not single pit bulls out as being more aggressive. I do not once mention a pit bull in this post. It is a picture of an aggressive dog, and the post is about aggression. I have pictures of aggressive dogs (and one wolf) on other posts as well. Pictures shown on my posts are intended to complement the topic and not to infer the temperament of a breed as a whole. I appreciate your passion and I agree that pit bulls are often unfairly portrayed as inherently more aggressive.

March 24, 2008 9:44 PM
 

Andrew said:

Shut up about the picture of the pit... it's just a picture.  He never stereo-typed or even mentioned anything about the dog in the picture.  Just suck it up and show some appreciation about the article he wrote instead of nit picking at ***.

Good article Jeff, thanks for typing it up!!!

March 25, 2008 10:47 AM
 

Funky Monkey said:

Well,  every time I go to our local SCPA,  it always seems like there is a fashionable breed for people who want a mean dog.  Sometimes it's the Pitbull,  sometimes it's the Rotweiler,  sometimes it's the Doberman.  It's pretty sad because all of these breeds can be wonderful and affectionate pets.

I have to admit that I was bit by my neighbor's Pit Bull once,  but it was only a Level 2 bite.  This was after about a year of Level 1 behavior every time I walked by on the road.  One day his owner was around,  and somehow that made him cross the line.  I don't blame the dog,  however,  I blame the neighbor -- this person was notorious for letting animals such as draft horses,  sheep,  ponies, and dogs run loose in the neighborhood.

March 25, 2008 10:59 AM
 

Rory said:

Hi jeff, i have a border collie and he has never shown any signs of agression towards me or any of my kids.  He regularly plays with the kids on the street and has never shown any signs of agression.  Today however he charged at a 5 year old girl and appeared to have bit her.  Her there is a bruise but no puncture marks.  The bruise was there almost immediatly.  My question is can a bruise appear that fast?  And do they have the right to put the dog down?  Using your scale it appears to be a level two bite.  Thanks

March 22, 2009 10:18 AM
 

Tempermant - Basset Hounds: Basset Hound Dog Forums said:

Pingback from  Tempermant - Basset Hounds: Basset Hound Dog Forums

August 29, 2010 12:36 PM

About Jeff Millman

I am a private dog trainer in Chicago, IL. I studied at the famous Academy for Dog Training in San Francisco, with the phenomenal trainer Jean Donaldson. I started Chicago Paws, my private dog training business in 2001 and I started my online dog training site WatchandTrain.com January of 2007. I launched the community portion of the site at the end of 2007. I am a zealot about positive reinforcement-only dog training and want everyone to enjoy their dogs as much as I enjoy mine -- without using pain or fear of any kind in dog training. I live in Chicago with my wonderful wife, Cassy and our two Collies, Ranger and Trooper, and our Shetland Sheepdog, Linus.

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