08/05/2023
Predatory drift is a term that floats around trainer circles. To my knowledge this concept hasn't been studied, researched or peer reviewed so it's a term that trainers use to describe a phenomenon that many of us have witnessed played out. And while the term "predatory drift" may not be scientifically recognized yet, and is generally anecdotal at this point, it doesn't mean the phenomenon doesn't happen.
Personally, I've had clients come to me after a fatality and I know vets who have had to deal with these cases, sometimes even their own dogs. And many, many other trainers have witnessed or have their own client experiences. Chances are if you're a dog park regular, you may have also experienced it. So for the sake of terminology and simplicity I'm going to describe what is meant by most when using the term.
Predatory drift, a term identified by renowned behaviorist and veterinarian Dr. Ian Dunbar (based on the original term “instinctive drift" from Breland & Breland in 1961), describes a predatory sequence that typically gets triggered by a normal social interaction (commonly play) between two dogs, often a large and small dog.
The trigger most often is the smaller dog squealing or yelping, similar to what a small prey item would do when threatened, which seems to “flip a switch” in the bigger dog’s brain that this dog, a previous playmate, is now perceived as prey, not playmate, and the predatory sequence is initiated, culminating with a final, often fatal, grab and shake.
Predatory behavior should not be confused with "normal" aggression, though it commonly is lumped into dog-dog aggression.
This is an important distinction. Let's review what predatory drift/predatory behavior is not. More details in this week's post. https://rescuedbytraining.com/2023/05/01/predatory-drift/