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  Trailing Off-Lead

Jump to a topic: 

Definition of Terms
Varying Trail Age
Contaminated Areas
Off-lead Trailing
Scent Discrimination
Training Intersections 
Working Dogs in a Large Group
Scent Pools
Multiple Surfaces
Scent Wheel


Synopsis of an off-lead trailing class instructed by Jonni Joyce in August, 2000, written by Roxanne LaGreca, Beartooth Search Dogs

Trailing off-lead

Jonni starts the dogs and handlers she trains with off-lead trailing because it is the best method she has used so far to train both dogs and handlers in the trailing discipline.  The off-lead trailing method teaches the handler to read the dog and teaches the dog what the handler wants.  Off-lead, the dog is able to show the handler its unique body language that can tell the handler when it is on scent, when it is looking for scent, when it is off scent, without being hindered by the lead or the handler. Urban work is another story, and eventually the handler will have to learn lead handling skills.  The idea here is that lead handling is a separate skill the handler should learn after he/she has learned to read the dog. For the purpose of this training, and a review of this seminar, we will talk about a wilderness environment. In the wilderness or forest, it is more efficient for the dog work off-lead. For most of the participants in this course, off-lead trailing is one of their operational criteria.

To begin the off-lead trailing seminar we started in a safe wilderness environment.  The area was away from roads and safe from hazards.  This allowed the handler to keep pace with the dog, and focus on the dog's body language without the worry of impending doom.  At the beginning of the session Jonni asked us, "Describe to me what your dog does from head to tail when it is on scent, and when it is off scent"  Some of us had ready answers for at least half of the dog's body.  Others confessed they had no idea what happened behind the nose.  Ask yourself these same questions:  Is the tail up or down, does it make sounds with its nose, does it zigzag when on scent?  When your dog is off scent, what does it look like?  

Of course to watch the dog, you have to keep up.  Some of us grunted and moaned, but later found that it wasn't all that difficult.  Our dogs generally zoomed out ahead, but we were able to catch up to them when they got to scent pools, turns and other scent obstacles.  I could see how this method would quickly increases your stamina and conditioning for the job.  

Many of us admitted that the lead had become a crutch for us.  (The lead is a crutch when dropping it or going off the lead is postponed because of fear of what may happen if the dog has free reign.)  One advantage to starting trailing off-lead is that problems with the dog’s concentration or distractions can be detected early in the training process, thereby making a handler deal with each problem as it arises.  For example, you don’t want to let the dog off-lead because you fear it will “critter”.  Then you have to deal with the critter problem in the dog’s training, and do some critter dissuading separate from you trailing problems.  If your dog isn't listening to you, is not coming when you call it, or will not go a direction you ask it to, you will have to deal with that early on in the training process.  If the dog is not excited to trail, you may also have to move backward to motivation problems with the dog to reinforce interest in finding human scent.  Of course, motivation games are great for training, at any stage of the game, because motivation keeps the game fun for the dog.

Pre-planning for off-lead trailing:

There are some handler skills that will significantly improve success rate in trailing work of any kind:  

1) Scent theory.  Every handler needs to have a basic understanding of scent theory.  Suggested reading.
2) Commands - Know what command for search your going to use, if your going to use a separate command for track.  Jonni suggested we have a second command for asking the dog to "check it".  The reason for this was so that we didn't continually repeat the search command to the dog, when we wanted it to check here or there for scent, or to direct to another location, or to where we were last sure it had scent.
3) Obedience/Bonding - Handlers that had done their homework in obedience and had a clear working relationship with their dog, had a much easier time with off-lead trailing than those who needed work in that area.
4) Scent Articles - Know how to correctly collect a scent article.
5) Pre-Planning - 95% of problems are known to the handler.
6) Be "A Lert" or alert - Notice what your dog does from head to tail when he is on scent.  Notice what your dog does from head to tail when he is off scent.
7) Atta Dog - Verbal praise is very useful when the dog finds the right trail, makes the correct turn, or looks back for confirmation.  Ever seen a look in your dog's face like, "Hey, am I doing o.k?"?  Anytime you can say to the dog "Yes, that is what I want you to do", that's training.
8) Debriefing - Crucial step to success - review each problem and decide what to work on next.

Off-Lead Trailing

Runaways - The dog needs to do enough runaways so that the motivation level and enthusiasm to find people is there, and the dog associates the search command with finding a person or human scent.

Refind - Means that the dog returns to handler and tells them that it has found a person.  Jonni feels this is the basis for off-lead work in a wilderness environment, where the dog will be ranging away from the handler.  When the refind is taught at the beginning of trailing, it can be incorporated into every problem thereafter.  This repetitiveness reinforces and builds a strong refind.  See related refind article.

Natural Trails - In the beginning of our off-lead trailing exercises we used natural trails to get the dogs' noses down.  This was especially useful for dogs who's primary focus was air scenting, or had been started on trailing after they had learned to air scent.  Dogs are able to focus, or put their nose down, where scent is naturally concentrated.  Natural occurring trails, footpaths or game trails collect the scent of the subject who uses it.

Intersections - In order to set up intersections, where the dog had to pick if the subject went left or right, we found places that had natural intersections off the trail.  If the dog took the wrong direction, we followed, but watched to see when the dog "threw a negative".  Or in other words, what it looks like when the dog looses the scent.  The dog was given the opportunity to circle back on its own, but if it did not, it was then re-directed back to where it had scent and we watched it take the right direction.  Some dogs got it right on the first try, and others were successful after just a few problems.

Breaking brush - Once the dogs had mastered turns on known trails, with natural trail breaks, it was time to teach the dogs that the lost subject doesn't always stick to a path. Those delusional folks, who continually get lost, sometimes break brush or leave the beaten path to make their own way.  Now would that actually happen?  Uh huh!  To accomplish this training problem we set up problems known to the handlers, with flagging where the subject left the trail.  This gave each handler a chance to watch when the dog, again, "throws a negative"  or looses the scent trail.  The handler then watched while the dog worked out the problem, and when the dog chose the right direction it received an "Atta Dog!", from the handler. When the dog was out off the scent, the handler took the dog back to where it last had scent, and the dog was successful at picking the right direction the next time. 

Scent pools - Here we go back to Scent Theory 101, with perhaps a new twist.  Most handlers have run into the dreaded - - scent pool.  A scent pool occurs where scent is held because of pockets of cool temperature, moisture or where quantities of scent are decomposing at a higher rate than the surrounding area.  A scent pool can occur in a low spot in terrain where human scent has collected, or where someone sat, slept, defecated, or fell down.  A scent pool can also occur off the path taken by a subject, due to winds or terrain, or in the immediate area around the victim or subject's hiding place.  Jonni explains that a trailing dog operates by checking the edge of the scent.  The dog finds where scent is - then where scent is not, and stays on the edge of scent to follow the path of the subject.  Coming to a scent pool can confuse the dog, and the dog will work the outer perimeter of the pool.  It is up to the handler to lead them through the pool, until the dog can work it out, and find its way to the subject.  Jonni pointed out that handlers who do 24 hr. operations, need to factor the scent pool situation into the scenario when training.  If a subject is lost for 24 hours, he or she may stop periodically, or may be stationary in one spot for a long period of time when they are found.  In these situations a scent pool can develop at intervals along the trail, and especially at the end, where the subject is located.  With training the dog will learn to work the scent pool and work its way into the subject.

Multiple Surfaces - We worked over gravel roads, on paved sidewalks, up decks and wooden stairs, into buildings that were carpeted or tiled.  Lots of different surfaces gave the dogs new challenges.  The dogs chose to trail near the buildings, where scent had drifted off the actual path.  The dogs also tended to work off to the side of the hard surface where scent had collected on vegatation or onto a more receptive surface for scent collection.  Most of the dogs slowed down in these areas, and trailed wider at times, but all of them continued on the path of the subject.

Scent Discrimination

        Scent articles – We added scent discrimination with scent articles, using all types of objects.  Some of the articles used were plastic, cloth, paper, and metal.  Then we used a few drops of a subject's blood from a cut finger.  I was skeptical at first, but I saw the dog take a whiff, and successfully follow the trail of a subject through a heavily contaminated area, where it had to discriminate between the scents of 9 individuals.  Jonni claims that a blood sample from your subject is the best scent article you can acquire.

        Working multiple dogs on a scent discrimination problem - This was a really great way to work a large group of dogs, and still get a lot out of a short training session.  We used 4 handlers, 4 victims, 4 flankers, 4 scent articles matching the victims for the first set.  4 victims walked up a trail together.  Each victim (indicated as a V with a number in the diagram) took a different branch and hid up the trail, not far off the path, but out of view.  Each victim left a flag or clothes pin at their turn off.  The order of victims and the turn off of their victim was known to the handlers.  The rest of the group, who was waiting for their turn, marched around the start, or PLS, to contaminate the area.

One at a time, handler, flanker and dog, took their turn.  The dog was presented the scent article and headed up the trail.  The dog made the find, and everyone came back to the start including the victim.  Next, handler was up, and the sequence continued until all 4 dogs had made their finds.  The first dog had to discriminate between many people at the start, and several people up the trail.  Each dog there after got an even more complicated scent picture.  Then, we repeated the whole thing again, in the same area but a little further up the trail, with 4 different handlers, 4 different victims, and 4 different flankers.  I was amazed at how successful the dogs were in such contaminated conditions.  Some of the dogs had problems on the first try, but most worked it out after another try. 

Scent Wheel - Here is my attempt to re-invent the wheel.  The scent wheel that is.  I have drawn it out the way we used it during the seminar.  It was a quick and effective problem for training the dogs to scent discriminate.  Or were we just showing the handlers that the dogs could do this?  I think the latter.  If you have already been working with scent articles on your problems, you will be surprised at how well each dog does, in a seemingly difficult exercise.  You can start with 3 victims and work up to 5 volunteer victims, each one brings their own scent article.  The victims space out approximately 4-5 feet apart (victim is denoted by a V with a corresponding number).  Set up the scent wheel as either a trailing or air scent problem.  It will work either way, because scent discrimination can happen on the breeze or on the trail.  At the seminar, we used a trailing scent wheel.  Each victim walked on different heading from the base of a 180° half circle.  Each victim widened the distance between the adjacent victims as they walked. (see diagram)  Victims hid where they are not in plain view of the dogs.  This was done because when the dogs saw the victim, they had a tendency to run up to each victim, rather than concentrate on the trail scent.  Although dogs were lined out nearby, this was not set up as a runaway, where the dog watched their own victim leave.

To work the problem, the handler would start the dog in a strip pattern, working across the paths of each victim.  The dog generally took the correct path the first time, but if this was not the case, the handler took the dog across the paths for a second pass.  The dog should not be started with its nose point in the same direction as one of the victim's path, because the dog will move in the direction it is pointed.  Instead the dog was positioned to start a strip pattern, and worked back into the scent area. This was a really fun problem to run, and again, really amazing that the dogs did so well the first time around. 

Contamination

We used the term "contamination" to have a different meaning than "scent discrimination.  Scent discrimination is where you ask the dog to pick between the scent of a subject or multiple subject when the scent article is present.  Contamination is where other people, things, or animals go through an area to contaminate the surroundings with scents.  To set up contamination we used a commons area at camp to do problems through.  We knew dogs, BBQ, food, cars, people and other contaminates had been present in this area.

Trailing distance - During the seminar we did some longer trails, but the primary learning experience was on the shorter problems.  The length of the problem depends upon your tracking environment and end goals.  We were reminded that a trailing problem that is a mile or greater, usually results in a series of starts and stops where the dog looses the trail in a scent pool and then picks it up again.  So achieving working stamina for long problems can also be done in a series of problems in one day, while at the same time concentrating on the training elements of the problem.

Varying trail age - Here is Jonni's theory of why hot tracks are similar, in the scent amount present, as very aged tracks.  From observing search dogs work hot tracks, or freshly laid tracks, it was noted that it was tough for the dogs to follow.  On hot tracks, the dogs tended to seek a wider band of scent, and only get bits and pieces of the scent along the track.  One possible reason for this, is that fresh scent hasn't settled and hasn't begun to decompose.  

 

 

 

 

When observing dogs work tracks that were moderately aged, it was noted that dog moves faster and did not cast as wide on the track.  Perhaps,  bacteria has had a chance to act on the scent, making it easier for the dogs to detect.  Finally, it was noted that very aged tracks take the dogs a while to work out, and casting becomes wider on the track. One possible reason for this is, that when scent ages for a very long period, it goes back to being difficult to detect because bacteria has eaten most of it away, or it has been dried up or effected upon by other conditions.  So perhaps, running hot tracks (again dependant up scenting conditions) may actually be similar in amount of scent present as running very aged tracks.  For the purpose of search dog training this may be an important time consideration.  If you can get more problems done by running hot tracks, yet still have challenging problems for your dog, you may have a chance to increase the training level, without increasing the time commitment.  I know what works for my part of the country, as we have very dry scenting conditions with low humidity levels.  Moderately aged and very aged, mean different things in different parts of the country.  You may have to experiment with this in your environment and find the variety of trail age that will work for your requirements.

Stuff that has nothing to do with trailing

I learned lots of stuff from the seminar that has nothing to do with trailing, but none the less interesting.  Coon dogs are COOL. That little Blue Tick Hound named Jeb, sure could trail and he made a terrific baying sound!  Jonni's objective was to take what "God gave that hound", meaning the desire to tree, and re-route that energy to treeing a human.  We all got to watch as Jeb trailed his subject to the "baying" tree.  When he got there it didn't take him long to get excited and start baying.  After she climbed down, Jeb got to play with that person like it was the best thing he could ever do.  Knowing your dog's breed and working with its strengths instead of against them can get you a jump toward your goal.  Fighting what nature put in them, on the other hand can be a loosing battle.

Volunteers are a precious resource.  Treat your people as if they were rare animals, because they are.  A trainer or leader's responsibility is to instill confidence in their people, build them up by showing them how to succeed, and revel in their accomplishments.  

I may want to keep a log for different disciplines of search dog training, especially because my dog is cross trained in water, cadaver, evidence, trailing, air scenting and so on.  Jonni recalled that handlers can be called to testify in court about what your dog found, or didn't find.  At that time training logs will be property of the court, sometimes, for up to two years.  Separate training logs can prove useful because a handler need only submit logs pertaining to that training which is in question.  The court can sometimes make certified copies of the logs, so that a handler can keep the originals, but this is not always possible.

I am glad to have the opportunity to attend a 4 1/2 day canine training seminar held in Wyoming, hosted by High Country Search Dogs.  If you haven't had the opportunity to get out and do some extensive training in a while, I highly recommend it.  Its good for your brain, good for your attitude and great for your dog.  I absolutely love the training style of Jonni Joyce, because she not only tells you WHY, she shows you HOW, and then follows behind you to make sure you are doing it right. This article will not be a substitution for having taken the seminar, but hopefully it will help you in some small way in training your dog.

Terms by Jonni Joyce

Terms –  A definition you apply dependant upon what part of the country you are standing in.
Tracking with canines – Dog follows disturbed or crushed vegetation.
Trailing with canines – Following human scent, whether it is on the actual path the subject traveled, or nearby the path a person traveled.
Contamination – Multiple scents in one area.
Canine Scent Discrimination – Choosing a scent that matches the subject being searched for.
Find – A person has been located or a body has been found
Confirmed Alert – Body or person cannot be recovered, but was later found in the area.
Statistics – Statistics lie, and liars use statistics.
Dawg – That four-legged creature who is smarter than us.
Werter – That stuff you “Feesh” in.
Grid Pattern – Crisscross pattern searching in four directions.
Strip Pattern – A stripped pattern, search in two directions.
Blind Problem – Not known to handler, known to trainer or flanker.  Will bring out areas where training is weak.
Known problem – Known to handler, and others.  Used when training the dog.
Test – Blind to handler, used to validate the dog and handlers training.
Reward – Anything the dawg wants to work for, or goes crazy over.
Refind – Dog returns to you to tell you it has found something.
Recall – Handler calls the dog to them.
Runaway – A motivational type problem to get the dog to run to a victim.

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