Critter Culture
Dog Behavior 101: Navigating Common Challenges

Dog Behavior 101: Navigating Common Challenges

Critter Culture Staff
Updated Jan 17, 2023


Picking out a canine friend to join your family can be a fun experience. Sometimes a particular puppy is chosen based on looks alone. Maybe they have a cute heart-shaped patch on their head or potential for the show circuit. But most puppies are chosen because their personality seems favorable to their future owner. However, your dog's behavior will change throughout life, so their character will be different once they mature.


Young dogs are more active

Puppies generally like to roughhouse with one another, but some are much more active than others. After you take your pup home, you'll discover their activity level is usually in "sleep mode" for much of the day as long as they're not filling their round bellies or relieving themselves. By the time dogs are six months to a year old, they'll be at their most active, which means it's crucial to keep them exercised and occupied, so they don't destroy your furniture for entertainment.

puppy running in the yard with a blue ball Mike Linnane / 500px/ Getty Images


Juvenile dogs have the shortest memory

Forgetfulness is often associated with old age, but dogs younger than 24 months have shorter memory spans than seniors. This can be linked to the tremendous development their brains and bodies are undergoing. Your pup might forget where they put that toy they were just gnawing on or that the couch isn't meant for chewing. Be patient, as your dog will get their mental ducks in a row between six months and two years.

Jack Russell terrier on the couch after chewing up a pillow smrm1977/ Getty Images


Maturing dogs get more discerning with their trust

Most puppies are fairly trusting of anyone and will follow you diligently. However, as your dog matures and gets life experience, they'll likely become more cautious around other humans. Dogs who were abused in the first years of life often have trust issues. Fortunately, most can learn to trust again when placed in a secure home.

Dalmatian hiding behind a chair Image Source/ Getty Images


They get less excitable with age

Is your pup always on such high alert that they're barking at someone while they're still at the end of the driveway? There's good news. Your dog will calm down. Your dog's brain becomes fully developed by the time they're two years old, and hormones make them alert to potential mates or possible intruders in their territory. This is why spaying (or neutering) your dog can help them relax as they would be without hormones running rampant. Your dog's excitability level will decrease steadily as they get whether they're neutered or intact.

Senior black labrador relaxing on armchair Justin Paget/ Getty Images


Dogs peak in attentiveness in early adulthood

Your young dog likely runs after squirrels and other distractions. Dogs are most trainable in the early adult phase of life bout one to three years old) when they're most attentive. (That doesn't mean you shouldn't train your pup; rather, just keep sessions short and frequent.) As your dog gets older, their attentiveness will also decline. Instead of running after the nearest squirrel, they'll often just close their eyes to take a snooze.

Young woman training dog in field in sunny day. Nico De Pasquale Photography/ Getty Images


Your dog's aggressiveness peaks at about four years

Your dog's age has a lot to do with how bold or aggressive they are. Aggression peaks in mature adulthood and declines once a dog achieves "senior status" at five years. Dogs who are intact are bolder than those who are spayed or neutered, and males are typically more aggressive than females.

Woman with her aggressive dog walking outdoors, closeup Liudmila Chernetska/ Getty Images


Breeds with shorter lives have fewer personality changes

Great Danes and other breeds with the shortest average lifespans show the least amount of behavioral changes over their lives. These short-lived breeds don't experience noticeable cognitive or behavioral aging until they die as mature adults at seven to ten years old. You'll likely enjoy your dog acting as though they're in their prime right up to the end, but it can be shocking to lose your dog suddenly when there was little to indicate that the end was near.

Two greatdane laying on sidewalk Christopher Bernard/ Getty Images


Your dog might experience cognitive decline

At about ten years old, long-lived dogs start to decline mentally. This cognitive decline usually begins gradually, but at about 15 years old, it usually increases dramatically. Your dog might start wandering the house as if forgetting how to find their way around or suddenly start relieving themselves indoors. A trip to the vet can determine whether behaviors are due to disease or cognitive decline.

Golden retriever puppy looking guilty from his punishment alexsokolov/ Getty Images


Dramatic behavior changes in the first and last years of their life

Your dog's behavior will change the most during the first two years of their life when their brain is still developing. Behavior changes at their life's end depending on the breed. Some dogs need geriatric care at age five or six, while other breeds won't decline until they're 15.

Dogs playing at public park Capuski/ Getty Images


You can predict your

You can anticipate your dog's mental changes by understanding the behavioral tendencies of each of the four stages of a dog's life (juvenile, mature adult, senior adult, and geriatric). Should your dog take an unexpected shift in behavior, they could be experiencing pain or illness, so visit your vet to check for health problems.

A border collie puppy is lying with his belly up on a table, looking happy and cute. There is an unrecognizable veterinarian petting him. She is wearing a stethoscope and blue scrubs inside a veterinarian clinic. FatCamera/ Getty Images




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