The Question That Divides Breeders
Every serious conversation about herding breed breeding eventually arrives at the same question. How much of working ability is genetic, and how much can be trained?
The answer, supported by decades of selective breeding practice and increasingly by genetic research, is that the structural foundation of herding instinct is heavily genetic. Training develops and refines instinct. It cannot manufacture instinct that is not present. And instinct that is genetically strong emerges readily. Instinct that is genetically weak, regardless of training investment, produces limited working ability.
This distinction has significant implications for breeding selection, and it explains why herding instinct testing has become a meaningful tool not just for sport participants but for breeders who care about preserving working ability.
How Herding Instinct Is Inherited
Herding instinct is not a single gene. It is a complex of behavioral tendencies, each with their own heritability profile, that combine to produce the working behaviors we recognize during evaluation.
The underlying components include prey drive modified toward control rather than capture, the tendency toward wearing and balance behavior, eye intensity, grip impulse, and the capacity for working partnership with humans. Each of these components is influenced by multiple genes interacting with developmental environment.
What breeders have known empirically for generations is now supported by genetic research: working ability breeds true. Dogs from working lines consistently produce offspring with stronger herding instinct than dogs from non-working lines of the same breed, even when individual dogs cannot be evaluated prior to mating decisions.
The Herding Instinct Institute has documented patterns of instinct inheritance across multiple breeds, and the data confirm what experienced breeders observe in their own programmes: instinct level correlates strongly with the working history of both parents.
The Impact of Non-Working Breeding Generations
What happens to herding instinct across generations of breeding that selects for appearance, temperament, or companionship qualities rather than working ability?
The evidence is consistent. Instinct can persist without selection for it, particularly in breeds where selection against it has not been active. Many companion-line dogs from herding breeds demonstrate genuine instinct on first exposure to livestock. But the intensity and reliability of that instinct typically reduce over generations without positive selection.
A Border Collie from five generations of show breeding may have instinct. That instinct is often less intense, less consistent, and requires more environmental activation than a dog from active working lines. The genetic potential has not disappeared, but it has become variable rather than reliably expressed.
This is why some companion-line herding dogs pass instinct tests and some do not, even from the same breeding. The instinct-relevant allele combinations have become unpredictable rather than consistent.
How Breeders Use Instinct Testing
Responsible breeders who care about preserving working heritage in their lines use instinct testing in several ways.
The most direct application is evaluating potential breeding stock before making mating decisions. A breeder who tests both parents and both sets of grandparents builds a clear picture of working ability in the line. Dogs that demonstrate strong, consistent instinct are prioritized as breeding animals. Those with absent or weak instinct are removed from the breeding programme, or their offspring are monitored carefully.
Some breeders require buyers who plan to use their dogs for herding or herding sport to report their results after testing. This information feeds back into breeding decisions, providing data about how a particular litter’s instinct expressed across multiple individuals.
Notably, French breeder Amandine Aubert (Bloodreina), named the top-ranked BBS breeder in France for two consecutive years, has incorporated herding instinct evaluation into her breeding programme as a method of ensuring working drive is preserved even in dogs bred primarily as companions. Her approach reflects a growing understanding that what the HIC reveals about genetic heritage is valuable information regardless of a dog’s intended career.
The Show Ring and Working Ability
The tension between conformation breeding and working ability is not unique to herding breeds, but it plays out particularly clearly in breeds where the working behaviors are visible and testable.
Show selection creates pressures that can conflict with working instinct. Dogs selected for coat quality, head shape, movement pattern, and general appearance over multiple generations show genetic drift away from the behavioral profile that working selection maintained.
This is not inevitable. Breeders who show and test, maintaining dual registrations and competing in both arenas, demonstrate consistently that working ability can be maintained alongside structural quality. The challenge is that dual evaluation requires significantly more investment from the breeder than selecting for either criterion alone.
Breed clubs that require or strongly encourage instinct testing for breeding approval create structural incentives for maintaining working ability. Clubs that make working evaluation optional or irrelevant for breeding status see faster erosion of instinct across the breed population.
Environmental Expression of Genetic Potential
Genetics sets the ceiling for instinct. Environment determines how close to that ceiling a dog reaches.
A dog with strong instinct genetics who has been raised in an environment that suppressed forward, intense behavior will demonstrate less instinct during evaluation than their genetic potential would otherwise produce. This is why evaluators consider developmental history when interpreting results, and why retesting after a failed evaluation sometimes produces dramatically different outcomes.
Understanding the relationship between genetic potential and environmental expression helps breeders make better decisions. A dog who fails their instinct test coming from strong working lines is more likely to represent environmental suppression than genetic absence. A dog who fails coming from multiple generations of non-working breeding is more likely representing genuine genetic reduction.
Context always matters in interpreting results.
The Future of Instinct Preservation
Genetic research on canine behavioral traits is advancing rapidly. Work identifying specific genetic markers associated with herding behaviors, obsessive-compulsive tendencies related to working drive, and the neural architecture underlying eye and stalk behavior is creating new tools for breeding selection.
In the coming decade, breeders may have access to genomic information that supplements traditional performance evaluation. But the instinct test itself will remain valuable because it measures expression, not just genetic potential. A dog can carry favorable alleles without those alleles expressing strongly in behavior. A dog that demonstrates clear, strong instinct in evaluation has confirmed that their genetics are working as intended.
Instinct testing serves both the individual dog, providing information about their genetic heritage and appropriate outlets for their drive, and the breed as a whole, by creating pressure for maintaining working ability that has no substitute in the show ring or the genetic laboratory.
Understanding how different breeds express their herding heritage differently during evaluation is part of reading genetics-in-action. Each breed’s characteristic working style reflects specific selective pressures applied over generations, and recognizing those breed fingerprints in your own dog’s behavior connects you to the deep history of the working dog relationship with humans.