unterHUNDs Research
This section provides science-based articles on dog behavior, cognition, stress and training. The research summaries draw on findings from neuroscience, behavioral science and animal welfare studies to explain how dogs think, learn and respond to their environment.
65 articles. Every claim is referenced, and every study comes with a note on how far its findings reach.
These articles are written in English and aimed at trainers, behavior consultants and veterinary professionals. Deutschsprachige Beiträge findest du im Hunderatgeber.
Puppy tests are used to match litters to families and to select working prospects, and the evidence against them is unusually clear. A cohort followed from the neonate stage to adu…
September 8, 2026
Group structure, hierarchy and leadership in free-ranging dogs, what the measurements support, and what none of it licenses for training.
September 6, 2026
What predicts resource guarding, why owners miss most of it, why shelter food-bowl tests fail, and what the treatment evidence actually amounts to.
September 6, 2026
Flat-faced dogs are less healthy — the epidemiology is clear. What is contested is which measurement predicts risk, and why demand keeps rising anyway.
September 5, 2026
Almost every dog school teaches a second fear period at 6 to 14 months. No canine study documents it, and the adolescence research found something else.
September 5, 2026
Trigger stacking is taught everywhere in dog training. There is no canine study of it, and its best-known number turns out to have no source at all.
September 4, 2026
Why "prey drive" describes a model that was abandoned, what the predatory sequence actually is, and why chasing is not aggression.
August 26, 2026
The frequency range, where the popular numbers come from, why congenital deafness follows pigment, and why one-sided deafness is routinely missed.
August 24, 2026
Can you calm an anxious dog by changing its food? The question is reasonable, the recommendations are everywhere, and most of them rest on an argument that sounds compelling: certa…
August 22, 2026
Why a dog that sits at home ignores the same cue at the park, what the transfer evidence supports, and where training predictably fails.
August 12, 2026
A dog learns two new commands, then sleeps for three hours with electrodes on its head, and afterwards performs better than it did before. That sentence describes an actual experim…
August 7, 2026
Floppy ears, curly tails, tameness — the classic domestication package. What the fox experiment showed, and why the syndrome itself is contested.
August 4, 2026
Neutering is still widely recommended as a treatment for behavior problems, aggression above all. Three large questionnaire studies do not support that: longer exposure to gonadal…
August 4, 2026
The lowered head, the averted gaze, the flattened ears — most owners read this as a dog knowing it did wrong. Three experiments have tested that reading directly, and all three poi…
August 1, 2026
A dog presses itself into the gap behind the sofa on New Year's Eve, shaking, panting, unreachable. The owner sits nearby, blinds closed, radio on, and does the thing that seems ob…
August 1, 2026
A dog bites a visitor in the hallway. The owner says it came out of nowhere, that the dog has never done anything like it, that he is not an aggressive dog. All three statements ar…
July 25, 2026
A bowl sits halfway between two places a dog knows well. On the left, bowls have always contained food. On the right, they have always been empty. The dog has never seen a bowl in…
July 25, 2026
Two owners take the same advice for the same problem. Both expose their dog to the thing it fears, gradually, repeatedly, with food. After six weeks one dog is calmer. The other is…
July 25, 2026
A dog treated successfully for its fear of the vacuum cleaner is calm around it for months — then panics again after a house move. Nothing was untrained. The fear had never been re…
July 17, 2026
One dog walks straight up to the new object in the garden. Another stops at four meters, looks, circles, looks again, and approaches thirty seconds later. Both eventually investiga…
July 17, 2026
Some dogs cannot stay with a task for thirty seconds. Some cannot settle in a room where nothing is happening. Some cannot wait, ever, for anything. Owners describe all three as "h…
June 21, 2026
A dog checks the same spot on the counter every evening, months after the food stopped being left there. Another abandons a puzzle after two attempts and looks at its owner. A thir…
June 14, 2026
A dog stops trying. It no longer offers behaviors during shaping, no longer investigates novelty, no longer attempts a problem it once solved. To an owner it may look like calm, or…
June 14, 2026
Two dogs receive exactly the same treat for exactly the same behavior. One gets it every time; the other gets it unpredictably, on average every fourth repetition. After a few week…
June 1, 2026
A dog watches another dog work out a puzzle and solves it faster afterwards. A puppy hangs back from a novel object until its owner approaches it calmly. A dog trained on a particu…
May 31, 2026
A dog that wants to greet a visitor but crouches with its tail tucked. A dog that starts toward a novel object and stops mid-step. A dog lunging at the end of a lead toward another…
May 11, 2026
The idea that dogs continually test humans for rank, and that owners must physically assert authority to keep order, has outlasted the evidence that produced it by several decades.…
May 7, 2026
What does it mean to call a dog aggressive? Does a single growl qualify? A stiff posture without sound? Is a dog fearful when it tucks its tail, or only when it flees? These questi…
May 7, 2026
A dog wags its tail. Happy? A dog lies still on its bed. Relaxed? A dog stops barking after a correction. Calm now? These readings feel automatic, and they rest on an assumption th…
May 5, 2026
A dog that stopped jumping on visitors weeks ago jumps on the first guest after a quiet fortnight. A dog that had made peace with the vacuum cleaner hides from it again after two w…
April 28, 2026
A treat that arrives when none was expected teaches more than the same treat delivered on schedule. A reward that fails to arrive when the dog was certain of it produces something…
April 28, 2026
A dog that performs a flawless recall in the garden cannot hear its name fifty meters from another dog. A dog that takes food gently at home will not touch a sausage at the vet. Ne…
April 20, 2026
Why does a dog offer a flawless sit for a visible treat and ignore the same cue when a squirrel crosses the path? Why do some dogs seem to seek out training sessions while others d…
April 16, 2026
Most owners read impulsive behavior as a training gap. A dog lunges at another dog, bolts after a squirrel, or cannot settle in an exciting place, and the conclusion is that the do…
April 14, 2026
A dog that sits reliably in the living room lunges and barks at a passing dog on the street. A dog that holds a long down at home trembles and hides when visitors arrive. A dog tra…
April 7, 2026
A dog's behavior is not solely the product of training, breed, or personality. Beneath every learned cue, every emotional outburst, and every moment of calm runs a complex, tightly…
April 6, 2026
Attachment theory offers a robust framework for understanding the emotional bond between dogs and their people. In attachment paradigms, domestic dogs display all four hallmarks of…
April 2, 2026
Frustration is something nearly every dog owner has watched unfold: the paw slapping the food bowl during a delayed meal, the desperate barking when a longed-for playmate is just o…
April 2, 2026
For decades, testosterone has been cast as the primary driver of canine aggression – a hormonal switch that, once flipped, turns a calm dog dangerous. This narrative has fueled cou…
April 2, 2026
Anxiety is one of the most common drivers of behavioral problems in dogs. Separation distress, noise phobias, and generalized anxiety affect a large share of the canine population…
March 30, 2026
A litter of eight-week-old puppies wrestles for four minutes, breaks off, and falls asleep in a heap. Almost everything written about that scene is an inference. That play built th…
March 30, 2026
Breed labels are the shorthand of dog culture. Border collies are "trainable," terriers "feisty," certain molossers "protective" or "aggressive," and these expectations shape how p…
March 29, 2026
Aging brings gradual neurobiological change across mammals, but in dogs a subset of individuals develops something beyond normal aging: a pathological condition called Cognitive Dy…
March 29, 2026
The communicative relationship between humans and dogs is a genuinely unusual case of interspecies social cognition. Unlike most animals, dogs are not merely sensitive to human sig…
March 29, 2026
Among the senses that shape the behavior of the domestic dog, olfaction is the primary sensory channel for many aspects of canine information processing. Where humans lean on visio…
March 28, 2026
Behavioral problems in dogs are often framed as issues of training, socialization, or environmental stress, and aggression, restlessness, hypervigilance, or a sudden loss of appeti…
March 28, 2026
For many owners, a sleeping dog is simply a resting dog – sleep read as a passive pause, a period of physical recovery and quiet. From a neurobiological standpoint it is nothing of…
March 26, 2026
For decades, trainers, breeders, and veterinarians have known that the first weeks of a puppy's life carry outsized weight. The sensitive period – often loosely called the "sociali…
March 26, 2026
Few questions in canine behavioral science provoke as much debate – or as many knowing nods from owners – as whether dogs feel jealousy. The scene is familiar: one dog gets a treat…
March 19, 2026
In veterinary behavioral medicine, aggression, irritability, and sudden behavioral change are often approached as behavior problems first and medical problems second – or not at al…
March 17, 2026
Over the past decade, the gut–brain axis has moved from the fringes of neuroscience to its center, reframing the gastrointestinal tract and the brain as one continuously communicat…
March 17, 2026
In canine training and behavioral medicine, few topics are as polarizing as the use of aversive methods. Their defenders point to rapid, visible suppression of unwanted behavior; t…
March 17, 2026
Two dogs of the same age can be biologically very different, and telomeres are one of the few ways that difference becomes measurable. The idea that follows is attractive: a dog's…
March 17, 2026
Dogs are extraordinary readers of human emotion. Thousands of years of living alongside us have tuned them to our gestures, faces, voices, and moods, and a large literature confirm…
March 8, 2026
Separation-related problems are among the most common reasons dogs are brought to behavior professionals, and among the most misread. A dog that howls, shreds the doorframe, or soi…
March 8, 2026
The use of punishment and aversive tools in dog training – shock collars, prong and choke chains, harsh physical corrections, intimidation – has been argued over on scientific and…
March 7, 2026
Two dogs bark and lunge at the end of the lead when another dog appears fifty meters away. One is trying to make it go away. The other is trying to get to it. The outbursts look ne…
March 7, 2026
When we train a dog to sit for a treat, the behavior reliably produces a reward. But does the dog understand why it works – or is it simply repeating a reinforced association? When…
March 2, 2026
We know dogs react to the world. The harder question is whether they can, in any sense, reflect on the contents of their own minds – whether a dog can register that it lacks a piec…
March 2, 2026
A breeder pairs two dogs, neither of which shows any merle pattern, and produces a litter containing a mostly white puppy that is deaf in both ears. Nothing about the parents' appe…
February 28, 2026
You punish the growl, and tomorrow it comes back louder. You comfort the trembling, and the fear does not fade. You have tried training, corrections, maybe a different trainer, and…
February 28, 2026
Dogs are cleverer than the "just an instinct-driven animal" caricature allows, and decades of research have made that case convincingly. Their skill at reading human communication…
December 16, 2025
Oxytocin, a nine–amino-acid neuropeptide synthesized in the hypothalamus, is frequently invoked to explain the closeness of the dog–human relationship.
December 16, 2025
Epigenetics describes how environmental factors and individual experiences can influence gene activity without changing the DNA sequence itself. Where classical genetics asks what…
December 15, 2025
A dog's behavior is not random. It emerges from the interplay of neural, hormonal, and experience-based processes, and over the past two decades neuroscience has begun to make part…
December 15, 2025