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Prey instinct in modern lines: between performance and behavioral drifts

In recent decades, the selection of working dogs, particularly in the German Shepherd and the Malinois, has become strongly oriented towards and through sport.

This orientation placed the prey instinct or predation  at the heart of breeding criteria. While this has resulted in fast, energetic, and impressive dogs, it has also led to certain excesses, particularly in terms of behavior. This topic is also addressed here.

The prey instinct: a driving force that has become hegemonic

The prey instinct—the ability to pursue, capture, and interact with a moving object—is valuable in many disciplines: obedience, search, detection, and sport biting.

It allows for extreme motivation and great explosiveness and is part of the dog's ancestral instincts.

However, in modern lines, this instinct is sometimes taken to extremes. The dog becomes what some call a "Beutegeier"—a dog focused solely on prey, without discrimination.

He "plays the game," pursues, bites, retrieves, with impressive intensity... as long as the framework is mastered. Out of context, his commitment can become inappropriate, even problematic.

"The dog plays the game, but in a serious situation, there is nothing behind it."

This over-specialization often comes at the expense of other instincts, such as vigilance or defense—two pillars of canine behavior, once essential in working lines.

We will come back to this in a future article.

And social communication is impoverished.

This exclusive selection on the prey profoundly modifies the behavioral balance.

Many dogs from modern lines have lost some of their ability to interact with their peers and manage conflict situations.

Where some knew how to impose their place through posture, attitude, and gaze, others only know how to bite.

Their relationship to the world becomes one-dimensional: what moves continues, what resists bites.

This not only affects cohabitation with other animals, but also the dog's ability to exercise discernment in real-life situations, outside of the sports field.

An experienced trainer summed up this development as follows:
“Everyone has a good time no matter what the Sozial Verhalten – if they are left with the Zähnen. »
→ “Many dogs today no longer have any real social behavior – they regulate everything with their teeth.”

The vocabulary of Eastern breeders: "right" and "left"

In some breeding traditions from Eastern bloodlines, particularly those influenced by the old DDR standards, breeders distinguished two broad behavioral profiles: "right" dogs and "left" dogs.

So-called "straight" dogs are very prey-oriented. They are often lively, easy to motivate, and not very suspicious. Their behavior is straightforward, without excessive inhibition.

This makes them good candidates for sport, but their lack of natural alertness may limit their usefulness in real-life protection or guarding settings.

So-called "left-handed" dogs, on the other hand, are often more reserved, more attentive to their surroundings.

They observe before acting, exercise caution, and develop a keen sense of vigilance.

They do not systematically throw themselves on the prey: their commitment is more measured, but often deeper.

Their defensive instinct is also more pronounced.

One breeder described this distinction as follows:
“Die Linken schauen erst mal – die Rechten rennen gleich los. »
→ “The left looks first – the right charges straight away.”

This vocabulary, not scientific but derived from decades of empirical observations, helps to shed light on certain oppositions that we find today between ultra-sporty lines and more complete lines, more balanced on an instinctual level.

Towards a redefinition of the “good working dog”?

Far from rejecting the sport, this is about highlighting a trend: by focusing on demonstration, some dogs lose depth.

Prey instinct is a great motivator, but it shouldn't be the sole pillar of selection.

A complete working dog must be able to express both vigilance and defense, social reading and physical engagement.

Some ancient dogs, sometimes considered "dull" by modern standards, were actually very thorough and reliable.

As one former service dog trainer said:
“Ein echter Diensthund muss nicht schreien, er muss wirken. »
→ “A true service dog doesn’t need to overdo it, he needs to have an effect.”

In a future article, we will return in more detail to this crucial question: how the hyper-development of the prey instinct can erode the instincts of defense and vigilance, and what this implies for the selection of sustainable lines.

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