07/12/2025
Why Genetics Matter… But Not as Much as You Think
Ask any dog owner why their dog behaves the way they do, and you’ll hear everything from “He’s a Collie, they’re all mad” to “She’s a Spaniel… say no more.”
We humans adore a sweeping generalisation. It saves us from having to look too closely at the real answer, which is almost always far more interesting, far more nuanced, and occasionally far more inconvenient.
The truth is this: dogs are not simply born pre-programmed to behave in the ways we expect.
Genetics matter, of course they do… but only in the same way that having a gym membership matters for your fitness. It’s a starting point, not the whole story.
Let’s break it down properly and if it ruffles a feather or two, consider those feathers overdue for a shake.
Genetics: The Blueprint, Not the Building
Genetics can tell us what might be likely, but not what will be guaranteed.
Yes, you can expect certain traits:
A Border Collie with a PhD in micro-managing sheep, children, hoovers and anything else that dares move.
A Spaniel who believes adrenaline is a food group.
A German Shepherd who clocks everything, forgets nothing, and suspects everyone.
A Labrador who lives for snacks, strokes, and the faint hope that every passer-by might be carrying a sausage.
But even then, genetics don’t dictate destiny. They merely set the stage.
What actually happens on that stage, the lighting, the props, the plot twists, and whether the audience bursts into applause or flees the theatre, is shaped by far more than DNA.
Environment: The World That Shapes the Dog
A dog’s world plays a massive role in what they become.
A well-bred, stable dog placed in a chaotic, unpredictable home with no boundaries and no job can develop more behavioural issues than a pound dog with a rough start but a structured, steady environment.
Dogs feel their world intensely:
• Predictable routines build security.
• Clear communication builds trust.
• Boundaries build confidence.
• Constant chaos builds… well… chaos.
And then there’s the opposite problem: dogs bred for serious jobs now living in homes where the biggest daily challenge is choosing between the sofa and the other sofa.
A high-drive working bred dog stuck living a bored suburban lifestyle is like hiring a Royal Marine to water your houseplants. Lovely idea, terrible fit.
Life Experiences: The Good, the Bad, and the ‘Oh Dear’
Just like us, dogs accumulate experiences that shape how they think, feel, and react.
• A frightening encounter at five months can echo for years.
• A rough trainer who confuses “teaching” with “intimidating” can create lasting fallout.
• A kind handler with structure, boundaries and fairness can rehabilitate even deeply troubled dogs.
Positive experiences build resilience.
Negative experiences build reactivity.
Predictability builds trust.
Chaos builds anxiety.
Dogs aren’t blank slates… but they’re not finished products either. They’re continuous works in progress, shaped by every success, every failure, every lesson, and every human interaction.
Individuality: Not Every Breed Read the Memo
You can have a Retriever who hates water, a Malinois who loves naps, or a Spaniel who thinks retrieving is beneath them (it happens more often than you think).
Every dog has:
• Likes and dislikes
• Tolerances and thresholds
• Emotional quirks
• Personal coping strategies
• Little habits that make their owners smile (or consider alcohol)
Some dogs are sensitive little souls, others are made of emotional Kevlar. Some are thinkers. Some are doers. Some are enthusiastic idiots (we love them). Some are deep thinkers who take everything very seriously.
Treat a dog like a stereotype, and you’ll miss who they truly are.
The Problem of “Unemployed” Working Dogs
One of the biggest behaviour issues today stems from genetic purpose with no outlet.
For generations, humans bred dogs for jobs:
• Herding
• Guarding
• Tracking
• Hunting
• Scent work
• Protection
• Ratting
• Companionship
Then suddenly, many of those dogs found themselves unemployed, ignored, unstimulated, and under-challenged.
A bored working dog doesn’t become relaxed; it becomes:
• frustrated
• obsessive
• destructive
• reactive
• creatively chaotic in ways only a Spaniel can truly master
If you want a dog bred for purpose, you need to offer some version of that purpose, even if adapted for modern life.
So… Are Dogs “Born This Way”?
Yes and no.
Yes, genetics give us tendencies.
No, they don’t give us excuses.
A dog’s behaviour is the result of the whole picture, not a single piece of the puzzle:
• Genetics – the blueprint
• Environment – the world they live in
• Life experiences – the lessons they’ve learned
• Individuality – who they are as a living, thinking being
When all four come together harmoniously, you get a well-balanced dog.
When they clash, conflict follows.
What This Means for Owners and Trainers
If you’re a dog owner:
• Don’t assume your dog “should” behave a certain way because of breed.
• Don’t blame everything on genetics.
• Don’t ignore the role of training, structure, outlets, and life experiences.
If you’re a trainer or handler:
• Look past the surface.
• Consider the dog’s biology, psychology, and emotional state.
• Don’t dismiss behaviour as “just the breed”.
• Educate owners about fulfilling needs, not just managing symptoms.
And if you work with reactive dogs?
Understanding this whole picture is non-negotiable.
Reactivity almost always comes from a mix of:
• genetic sensitivity
• environmental instability
• poor early experiences
• lack of clarity or outlets
• stress or frustration
• unmet biological needs
It is never just “how they were born”.
Final Thoughts
Whether you’re a dog owner, dog handler, or dog trainer, remember this:
Dogs are never one-dimensional.
They’re not machines.
They’re not robots.
They’re not their breed stereotype.
They’re living, breathing individuals shaped by a combination of nature, nurture, and everything in between.
Yes, some dogs may have been “born this way”…
But understanding why they are the way they are is where real training, real progress, and real transformation happens.
And if all else fails?
Blame the Spaniel. It’s usually their fault anyway. (Only joking… mostly.)