The hardest age to train a dog is typically during puppy adolescence, from about 6 to 18 months, when hormonal changes and brain development lead to increased independence, boundary testing, selective hearing, and energy, causing regression in previously learned skills, making them seem stubborn or disobedient. This "teenager" phase challenges even well-trained dogs as they become bolder and less eager to please, often peaking around 7-10 months.
The Adolescent Phase (6–18 Months): The “Teenage” Challenge
Most trainers agree this is the hardest age to train a dog. Around six months, dogs hit adolescence—hormones surge, independence grows, and focus disappears. Commands they once knew suddenly seem optional, and testing boundaries becomes a daily habit.
Adolescence marks the change from being a puppy to becoming an adult. In dogs, it can start any time between six and 12 months and can end between 18 and 24 months. During this time, there are dramatic hormonal changes and a reorganisation of the brain.
The 777 Puppy Rule (or Rule of 7s) is a guideline for puppy socialization, suggesting that by seven weeks old, a puppy should experience seven different Surfaces, seven different Sounds, seven different Objects, seven different People, seven different Locations, seven different Containers, and seven different Challenges, all in positive, short, and safe ways to build confidence and resilience. It helps prevent fear and reactivity by creating positive associations with novel experiences during the critical socialization window (around 4-16 weeks).
Adolescence Age: 6 to 18 Months
During this time, puppies are discovering the world around them and may become more independent, playful, and sometimes disobedient. At this point, many dogs tend to test their boundaries, and the once successful training techniques may not work anymore.
The 3-3-3 rule for dogs is a widely used guideline that outlines how a dog typically progresses during the first 3 days, 3 weeks, and 3 months in a new home. While every dog is unique, this rule helps adopters set realistic expectations during the early adjustment phases.
The Hardest Dog Breeds to Train: Working with Difficult to Train...
Red flag puppy behaviors signal serious issues beyond normal puppy antics, including aggression (growling, snapping, biting, lunging), extreme fear/anxiety (intense cowering, hiding, refusing treats, constant escape attempts, shutting down), resource guarding (guarding food/toys with aggression), and severe separation anxiety (destructive behavior when alone). Recognizing these early and seeking professional help from a trainer or vet is crucial, as these often stem from trauma or lack of socialization and won't just disappear with age.
The hardest months with a puppy often center around two key periods: 3-5 months (teething, regression, lack of impulse control) and 6-12 months (adolescence), when hormone surges bring boundary testing, stubbornness, and increased energy, making training and housebreaking challenging as they become "teenagers". Expect frustration with accidents, nipping, chewing, and defiance during these phases as their brains develop, requiring patience and consistent training.
Fluffy white Japanese Spitz dogs are the naughtiest. And a half-Chihuahua, half-Pug breed called Chugs also ranked low. The best-behaved dogs include Korean Jindos, Rhodesian Ridgebacks, and Miniature Pinschers.
Adult dog teeth start to grow in when your puppy is 12–16 weeks old, and your puppy's gums may be a bit sore during this time. Because of this, puppy biting tends to hit its peak when a pup is about 13 weeks old.
SEXUAL MATURITY, OFTEN CALLED TERRIBLE TWOS OR AWKWARD AGE
Before hormone levels are stabilised, the brain can be a bit haywire. The desire to play decreases, both sexes (a little less distinctive in females) become less social, more hesitant and more aggressive towards unfamiliar dogs.
The Hardest Tricks to Teach Your Dog
The "10-minute rule" for puppies often refers to short, focused training or exercise sessions, like 10 minutes of playtime or training, to prevent overwhelm and build positive habits, or a potty training method: 10 minutes outside for a potty break, 10 feet of space, and 10 minutes of supervision; if they don't go, back to the crate for 10 minutes, then try again. It's also a patience strategy for owners: set a timer for 10 minutes when frustrated, knowing the behavior will likely stop or change, helping you maintain calm.
Can You Train a 2-Year-Old Dog? At Disco Paws, we often hear from loving pet parents, "Is it too late to train my two-year-old dog?" It is a common question, and we are here to tell you that it is absolutely possible! Age is just a number, and with the right approach, adult dogs can learn and thrive.
Eaten from at least 7 different containers • Been held and petted by at least 7 different people • Taken at least 7 one-mile car rides • Been in a crate at least 7 times • Played with at least 7 different kinds of toys • Walked on at least 7 different substrates (grass, gravel, concrete, etc.)
The 5 Ds of dog training are guidelines (often presented as 4 Ds: Distance, Duration, Distraction, Difficulty/Distress) that help you gradually increase the challenge of a command, ensuring success by mastering one element before adding another, preventing overwhelm, and building reliable obedience by controlling environmental factors like how far away you are (Distance), how long they hold a behavior (Duration), what's happening around them (Distraction), and the complexity of the task (Difficulty/Distress).
80-10-10 refers to the ratio of meat, bone and organs that are typically used to make up a raw diet. Most people will aim for a starting ratio of 80% muscle meat (which can include things like tripe and heart), 10% bone and 10% secreting organs (half of which should be liver).
How do I discipline a puppy? Disciplining a young puppy may be necessary if its behavior threatens people or property, but harsh punishment should be avoided. Hand clapping and using shaker cans or horns can be intimidating enough to inhibit undesirable behavior. However, remote punishment is preferred.
3 Signs Your Dog Doesn't Like You
DO NOT
According to this study, the naughtiest dog breed is (drum roll please) the Japanese Spitz, with 86.67 hashtags or mentions noting unruly behavior. For those who haven't heard of this breed, they are tiny little white marshmallow fluff-balls who are cousins to the Pomeranians.
The "heartbreak breed" refers primarily to the Great Dane, nicknamed this due to their affectionate nature combined with a relatively short lifespan (around 7-10 years) and susceptibility to serious heart conditions like dilated cardiomyopathy (DCM), making losing them particularly difficult for their devoted owners. Other giant breeds like Irish Wolfhounds, Bernese Mountain Dogs, and Saint Bernards also face significant health challenges, including cancer and heart disease, often earning them similar sentiments from owners.
Some of the most common include: