I have often wondered about why dogs do false alerts. Is it a misunderstanding or is it something else? This article was written with my own experience as an example. I would like to put forward a few thoughts so that maybe we can learn to understand the phenomena together.
The problem with false alerts is often up for discussion. It’s understandable. It’s never good to have false alerts that leads to intruding on peoples integrity. A dog indicates on a wall and its torn down just to notice that there wasn’t anything there. I rather have a dog miss a target than falsely alert because a missed hide can be found by another dog. We can already see at trials here in Sweden; it’s very seldom one dog finds all hides, but also very seldom that all the hides haven’t been found.
Last week Sammy and I went to a trial and got disqualified for 3 false alerts (!) to me it was a chock since she has never falsely indicated that much in her life. It can happen once sometimes, but not totally random. And never several times in a row. Of course I got curious, why?!
I often reflect on false indications since I can see it’s a problem showing in most dogs at some point. Here are some of the things I have thought about.
Residual and false indications
I wrote an article on false indications before (in Swedish) where I explain a behavior I noticed: the control smelling. I work a lot with teaching the dogs to not indicate on residual odor. It’s still the same compound of odor molecules but they get weaker and weaker, and I have seen that it takes a lot of analysis for the dogs to tell them apart. It’s something that has to be taught. When the dogs are tired they seem to have more difficulty telling them apart. It takes a lot of concentration and sometimes they just don’t have the mental endurance to tell the difference. I don’t see this as a true false indication since it’s actually just regulation of the scent threshold.
Because of this I have chosen the freeze indication (Kong is not dangerous to smell for a longer time) to be able to control while indicating. That means that when the reward is not coming, they smell again. They will alert again if it’s actually there but sometimes they make a fast decision and notice, with further control, that it was residual and will then let go of the indication and move on.
However, in the trial I had, Sammy didn’t analyze again, but stood firm in her indication. Without using her nose for control, I suspected it was not right. But she was so stable in her alert that I ended up confirming it.
More about these thoughts in another reflection on the subject (translation on it’s way).
Hides placed high or unreachable
High hides are the ones that caused me the most problems when it comes to false alerts. As mentioned above my dogs stay and analyze while in alert behaviour. When the hides are out of reach this control can’t be done in the same efficient way.
I also have difficulty knowing when they actually have the scent where it’s the strongest. So I have probably rewarded only for the alert upwards instead of reinforcing the smell in itself. When they get frustrated, and can’t find anything, I have seen that dogs can point upwards and hope for the best. My dogs often show that they can feel something up there, but aren’t able to pinpoint the way I’m asking for at other hides.
A solution to this would be to lift the dog, or teach the dog to use then handlers body to get closer to the source and then able to analyze and decide in a better way. The first false indication at the trial was pointing up. I reward with praise, as explained further down. Maybe she thought indication was the game of the day.
Rewarding during blind searches
Because this possible misunderstanding could make the dog thinking false alerts is a part of the game. Many people integrate chains of behaviors where the scent in itself is not rewarded when not knowing if it’s true. To continue the search is seen as reward enough. If using toys, treats or praise it would be for another behavior in the chain. Maybe a call back or just ”continue” command.
However, I see a problem in this way of thinking. If the scent is never rewarded during blind searches, the dog will learn that alerting on the scent is not important in that particular situation. The value of the odor decreases and either the dog think its doing something wrong or see a higher value in continuing the search than actually indicating on the hide.
Then we come back to the variable reward system. How often would you continue a search without reward if the dog doesn’t get any positive response from us when working super hard to find and indicate? Then we can get back to the problem with extinction.
Before I decided to praise the dog a lot when finding a hide even when I’m not sure it’s right I did this exact thing; rewarding another behavior in the chain.
However, I felt bad when seeing that the dog was looking disappointed and that made me avoid training a continued search. I ended up rewarding often enough for the behavior to come under extinction when at trials or during blind searches. It wasn’t a fun game anymore.
So I find many more pros than conswith rewarding with praise. There is a confirmation for the dog that it’s right, but not as strong as a marker (clicker for example). The clicker gives such a precise kick of emotions that it’s a bigger risk that it remembers the reinforcement. Which would then be a false indication in this case.
Also, since dogs takes a lot of time to generalize, I don’t think a social reward will give more false alerts in other circumstances.
If there is a problem with false alerts, I rather adress that, than avoiding praise during blind searches. Motivation for the search and target odor will always be the most important for me.
Bridges
Then we get to the next problem.
We mostly reward at the hides and finding the target is what becoming the most important. That’s good, right!
But.. when always expecting a reward around the hide can also put the scent imprinting under extinction. The dogs spend so much time on finding patterns. They create expectations really fast. So then we’re back to the extinction part. No expected pay = something is wrong.
However, it’s impossible for the dog not to create expectations since we are so predictable. Our brains want to create habits, and if not adressed those habits will be created really fast.
It’s for this reason that bridges are so efficient. The smallest movement from us can create an unintentional bridge. That’s something that I noticed with Sammy. I use intentional bridges to get a steady indication behavior. But I also have some bridges that are unintentional. For example, I noticed that my confirmation of the find has become a bridge that can steady a false indication.
At trials we have to say ”markerat” when the dog is indicating for the hide to count. So that is very soon expected to be followed by a reward. So then we unintentionally reward indications even when searching blind. This is another reason the ”not rewarding hides when searching blind theory” is not reasonable. We will still say ”markerat” which has become a bridge. So no reward became an unintentional reward. This can of course also lead to extinction in the same way as mentioned before. ”Markerat” = Bridge = Expectations of reward. Reward not coming = something is wrong.
Training the alert behavior
I also have reason believe that ”frustration alerts” can become a problem when always focusing on getting a steady indication behavior. It’s so cool when the dog manages to stay in alert no matter what happens, and it’s also an important part in the trials. This leads us to almost always rewarding for the alert and not for the actual scent picture. When the dog doesn’t know what to do, maybe because it thinks it’s wrong or get frustrated about not finding anything. The dog will do what has been rewarded the most – the alert.
When we teach the indication posture we mostly start with a target that can be seen. Some use the unhidden Kong, some use a coin or maybe a small cup. The problem becomes clear when hiding the Kong and the dog doesn’t understand anything. We get to the generalizing problem. Dogs don’t generalize as humans. For some dogs it’s not so difficult to understand. But quite a lot of them don’t understand that alerting on a visible target and smelling a target and indicating is the same thing. We actually add another criteria that needs to be adressed. Smell first – indicate when sure.
When I managed to teach a steady indication on a visible target, I go over to not rewarding the dog if it alerts without smelling first. I start by gradually introducing the ”smelling first” criteria and when done, I want the ”pointing on visible targets” to become extinct.
Sometimes I can go back to the coin when getting problems with holding the freeze. But very very seldom will I do it on the Kong (which is our target scent). I never want an indication without smelling first.
I call it the ”scent command”. In the same way as I train the dog to no longer sit without saying ”sit”, I stop rewarding the alert without checking if the target odor is present.
Also, when the dog leaves an alert it will not be enough to just alert again. Just because the dog knows where the target is, it will have to check again. A new chance to do the right thing.
Who knows.. the Kong might not be there anymore. Maybe someone stole it in 1 second. At least that’s what I want the dog to think. And it could be true, since I work a lot with residual avoidance. Sometimes it’s there, sometimes it’s not.
Directions or staying too long in one place
I believe this is the main reason for Sammy’s false alerts at the trial. I have tried to make her alert falsely during this whole week. The only way I got a false alert was to insist with pointing my hand at the same place she already felt she had searched. Or, as during training this week; pointing at the same place several times.
In the trials this is a very difficult part. How to know when the area is searched?
Some trials have very big areas but only 15 minutes to search (Level 1) or even bigger areas with 20-30 minutes. However, I noticed, very often even, that they have to be around 10 cm from a hide to actually get the scent. It can be small pieces under a box or even hides in places where I thought would be easy. You never know..
So at trials it’s easy to get stressed about time.
When training I very seldom direct the dog to certain places by pointing. I try to teach the dog to search in front of me by itself. To teach it to search everywhere at that place before moving on.
In these Swedish trials, handlers actually have to do 50% of the job. The dog concentrates on the scent pictures, and the handler keeps track that the whole area has been searched. It’s not always that there is a scent to follow unless passing closely, so our job is actually important. Maybe the dog thinks an area is searched, but there might still be a hide in a corner for example. Maybe the odor is too weak to smell from further away.
So how do we know when the area has been searched? I would in training just wait until I have seen that the dog searched my imaginary cube before moving on to the next. Like that I move in a systematic way through the bigger area. Then it’s easier for me to keep track of my part of the job. But with a limited timeframe we need to move faster. At the trial I directed Sammy by pointing and places where I felt she hadn’t searched. She took this as another game.. or what do I know, really. All I know is that it was repeated 3 times in a row.
Preparations
Does the dog know which game we are playing?
The trials, and also in operative searches, the areas vary a lot! You could need to search a factory building, a school, forest or even sheep house. I think it’s important to have preparations to make the dog understand what we are supposed to do. Once a trial was in a forest, and I can say that most dogs thought they were out on a nice walk. No idea that it was the Kong searching game we wanted.
In my trial, where I got disqualified, I didn’t have the same routines as always. My husband was there (he is never there when training), I took her straight from the car and just a super quick smell on a piece of Kong in my hand. Normally I do a few mini-searches to prepare her for what to come.
Coming straight from the car after a long car ride made her get way way too excited, I think. Maybe she didn’t analyze as otherwise?
But.. apart from the false alerts, she searched in a concentrated and amazing way! What I had focused on the last few weeks had really paid off.
So… now I know what to think about for the next trial!
False alert?
During the week I was trying to figure out what could have been the reason for the false alerts. I thought that maybe I had been focusing on training with too many hides. So I was gonna do a long empty search to see if I could provoke a false response. The first thing she does is alert! Oh my god! I have a big problem now.
But of course there was a forgotten piece hidden under the rocks. Phew!


