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What is Flooding in Dog Training?
Flooding is a behavior modification technique used in dog training. It involves exposing a dog to the stimulus that causes their anxiety or fear response, without any opportunity to avoid or escape the stimulus. The goal is to increase the dog’s stress level to it’s absolute maximum so that they eventually become desensitized or habituated to the trigger.
Further reading: related guidance from Rebarkable · AVSAB position statements on humane dog training
Flooding has been used as a training technique for dogs since the mid-20th century. The method grew in popularity due to its speed and effectiveness in eliminating certain canine behaviors. However, flooding has also been criticized as an inhumane technique that induces unnecessary stress in dogs. The controversy stems from the fact that flooding intentionally places dogs in a state of stress and/or panic without any perceived control over the situation.
In recent decades, more progressive reinforcement-based training approaches have gained favor over flooding. While flooding remains a legitimate technique in certain cases, many dog trainers now view flooding as a last resort after gentler methods have failed. There are also modified flooding protocols that aim to make the process less stressful. Nevertheless, flooding is still considered one of the more controversial and divisive methods in dog training.
How Flooding Works
Flooding is based on the principle of exposure therapy. It involves exposing a dog to the object, person, situation or environment that triggers their fear or anxiety response at full intensity, without allowing the dog to escape or avoid the trigger. The dog is put “in the deep end” so to speak.
The dog is exposed to their feared stimulus at maximum intensity right from the start. For example, if a dog is afraid of strangers, it would be directly exposed to unfamiliar people engaging with it. Or if a dog is afraid of loud noises, flooding might involve exposing the dog to fireworks or gunshots at close range.
The dog is prevented from fleeing or avoiding the feared situation. Usually the dog is kept on a leash or in a contained area so it cannot run away or hide. Escape and avoidance behaviors are completely restricted.
Flooding continues until the dog stops reacting fearfully and shows learned helplessness. This is when the dog essentially gives up reacting and realizes escape is impossible. The hope is that eventually the dog will realize the feared stimulus is not dangerous and become desensitized. The flooding process ends when the dog is tolerating the trigger calmly and no longer displaying a fearful response.
Potential Benefits
Flooding can provide some potential benefits for certain dogs when used appropriately. One potential advantage of flooding is that it can work quickly to change a dog’s behavior in a short period of time. For dogs with severe anxiety or fear issues, flooding may be able to create dramatic behavior changes faster than more gradual training approaches.
Flooding also directly tackles avoidance behaviors in dogs. Dogs that are afraid of something often avoid the stimulus causing their fear or anxiety. Flooding removes the ability to avoid the fearful stimulus, which can help the dog learn that the stimulus is not actually dangerous. Over time, the dog may stop the avoidance behavior and develop more tolerance for the trigger.
By continually exposing the dog to the triggering stimulus without escape, flooding aims to help the dog develop a high tolerance threshold for situations that previously caused stress reactions. With enough controlled exposure, their fear response can be extinguished or reduced. The dog essentially learns that the stimulus is safe because nothing bad happens despite continual exposure.
Risks and Drawbacks of Flooding
Flooding comes with some significant risks and drawbacks that should be carefully considered before utilizing this technique.
- Highly stressful for dogs. Flooding, by design, exposes dogs to extended durations of a stimulus that provokes anxiety or fear. This can be an extremely stressful experience for dogs that should not be taken lightly. The high levels of stress and panic caused by flooding could potentially traumatize some dogs.
- Risk of making anxiety worse long-term. While flooding may suppress a fear response in the moment, there are concerns that it could worsen anxiety over the long run. Since flooding does not address the underlying cause of a dog’s fear, the dog may continue to feel anxious and the fear could return or get worse over time.
- Ethical concerns about forcing dogs. Many dog trainers and animal behaviorists raise ethical concerns about flooding for essentially forcing dogs to endure extended durations of fear and panic during the process. This heavy-handed approach of overwhelming dogs is considered unethical and inhumane by some professionals. There are gentler methods that rely on counterconditioning and desensitization instead.
Suitable Candidates
Flooding should only be considered for confident dogs with mild fears, and even then, only as an absolute last resort when other methods have failed. The technique requires very careful implementation under proper protocols to avoid trauma, shutdown, or worsening of the fear.
Specifically, flooding may potentially help:
- Confident, resilient dogs with only mild phobias or fears. The dog must have an otherwise stable temperament without severe anxiety issues.
- Dogs that have not responded to extensive counterconditioning and desensitization over a long period of time. Flooding should not be a first choice.
- Dogs worked with by an extremely experienced, certified behaviorist able to closely monitor the dog’s reactions. It should never be attempted without professional guidance.
- Dogs in a controlled setting where all interactions around the fear stimulus can be managed safely. Real-world flooding has too many risks.
- Rare cases where a life-threatening behavior absolutely must be eliminated quickly due to danger to the dog or others. Even then, the flooding must be done humanely.
Flooding requires walking a very fine line to avoid emotional trauma, a suppressed immune system, shutdown, exacerbated fears, or fallout behaviors. It is best avoided in the vast majority of cases.
Is Flooding In Dog Training Ever Ethical?
I don’t believe it is, currently.
When Flooding Should be Avoided
Flooding is generally not recommended for fearful, nervous, or extremely anxious dogs. These dogs are already experiencing very high levels of stress, and flooding them can make their anxiety even worse or cause emotional damage.
Some signs that a dog may not be a good candidate for flooding include:
- Shaking, panting, whining, or other signs of extreme fear or anxiety during exposure to the trigger stimulus
- Urinating or defecating due to fear
- Aggression or attempts to escape or avoid the situation
- Shutting down and becoming unresponsive
Flooding requires the dog to remain in the stressful situation until their fear response decreases. But forcing an already terrified dog to endure their greatest fear can be psychologically harmful. It risks making the dog even more sensitized to the trigger rather than overcoming their fear.
Instead, severely anxious dogs require counterconditioning techniques to gradually change their emotional response through positive associations. Flooding may be possible once the dog has become less reactive through progressive desensitization methods. But it should always be avoided unless the dog can handle the stress without lasting trauma.
Modified Flooding Approaches
Some trainers use modified versions of flooding to try to reduce the risks. Two common modified approaches are systematic desensitization and progressive exposure.
Systematic Desensitization
With systematic desensitization, the dog is exposed to very low, non-threatening levels of the fear trigger at first. For example, if a dog is afraid of loud noises, the sound would be played at a very low volume to start. The dog is rewarded for calm behavior. Gradually over multiple sessions, the trigger is increased to higher levels. This counterconditions the dog’s fear response.
Systematic desensitization aims to retrain the dog below its threshold so it doesn’t experience distress. It requires more time and patience than traditional flooding. However, it may reduce fallout behaviors afterwards.
Progressive Exposure
Progressive exposure is similar to systematic desensitization. The main difference is the increments are pushed faster, more aggressively prompting the fear response. The goal is to stay right below the level that would cause the dog to completely panic.
This approach requires carefully reading the dog’s body language to gauge their fear levels. It aims to find the sweet spot that pushes the training but avoids trauma. Timing and execution must be precise.
Escape/Avoidance Training
Some modified flooding programs teach the dog an escape or avoidance behavior. For example, the dog may be taught that sitting or laying down will stop the scary stimulus. This gives the dog a sense of control.
However, critics argue this can reinforce fear by teaching the dog that the stimulus is something to be avoided. It also risks unintentionally reinforcing the fearful behavior if the dog naturally offers the escape behavior in response to fear.
Alternatives to Flooding
Flooding exposes dogs to their triggers all at once. It can cause fear, anxiety and stress. As a result, some trainers advise against using flooding and instead recommend alternative techniques to address dog behavior issues:
Counterconditioning
Counterconditioning changes a dog’s emotional response to a trigger. It pairs the trigger with something positive, like treats, praise or play. Over multiple training sessions, the dog starts to associate the trigger with good things instead of fear. For example, if a dog is afraid of strangers, the owner could reward the dog with treats whenever strangers appear. This counterconditions the dog to feel happy instead of anxious around strangers.
Desensitization
Desensitization gradually exposes dogs to triggers at a low intensity. The intensity is slowly increased as the dog remains relaxed. For a dog fearful of loud noises, the owner would first expose it to quiet noises like hands clapping. As the dog stays calm, louder noises get introduced over many training sessions until the dog can handle very loud noises without fear. The key is to keep exposures below the threshold that would trigger a fearful response.
Medication with Behavior Modification
In some cases, medication can help lower a dog’s anxiety levels so that behavior modification is more effective. A vet may prescribe anti-anxiety meds or sedatives to use temporarily during the initial stages of a desensitization training plan. The meds take the edge off while the dog learns new positive associations. Once the training produces results, the medication can be discontinued. This approach should be closely managed by a vet.
Rather than flooding a dog all at once, counterconditioning, desensitization and medication introduce triggers slowly based on the individual dog’s needs. For many dogs, these techniques can successfully resolve behavior issues without the risks of flooding.
The Controversy Around Flooding
Flooding is one of the more controversial techniques in dog training. Many experts (including myself) and owners have ethical concerns about the practice of forcing dogs to face extreme exposure to their fears or phobias. They argue that flooding can be psychologically harmful, increasing a dog’s stress and anxiety. There are risks of fallout like the dog shutting down or acting out aggressively. Some dogs may get even more sensitized and fearful if flooding is not done correctly.
On the other side, proponents believe flooding has its place for more severe issues if applied strategically. They claim that with proper implementation, flooding can lead to quick success in curing phobias and problems like separation anxiety. Supporters argue that flooding mimic’s exposure therapy and that avoiding triggers reinforces fearful behavior.
The debate around flooding reflects differences in dog training philosophies. More progressive experts advocate for force-free methods using desensitization and counterconditioning. But traditional trainers believe carefully applied flooding teaches dogs toface their fears and get over them. There is disagreement whether flooding’s potential short-term gains outweigh the risks and ethical concerns. The jury is still out, though the tide has shifted away from compulsion and towards positive reinforcement in recent decades.
The Future of Flooding
The use of flooding as a dog training technique has been on the decline among animal behavior experts and veterinary professionals in recent years. Although flooding can sometimes yield fast results, its use has become limited to only the rarest of cases where no other options remain. This is due to increased recognition of more humane and effective alternatives.
Most certified applied animal behaviorists today avoid recommending flooding unless the dog’s safety is immediately threatened. The extreme stress flooding imposes on dogs has led to an understanding that it should be an approach of last resort. Many dog trainers now view flooding as an outdated and inhumane practice.
Instead, force-free and positive reinforcement-based training methods have emerged as the preferred techniques. Scientific evidence shows reward-based training fosters better behavior in dogs long-term compared to punishment or flooding. These modern methods focus on engaging the dog’s natural drives and thinking while avoiding fear, pain or intimidation.
Additionally, medication can help manage anxiety in dogs when combined with gradual exposure training. This approach is far less traumatic than sudden total immersion flooding. Overall, the consensus among veterinary behaviorists increasingly supports phasing out flooding in favor of less aversive and more ethical alternatives that improve dog welfare. The future favors force-free training methods that help dogs overcome fears and behave appropriately through patience and compassion.






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