Scottish Terrier — Juvenile & Adolescent

Scottish Terriers are a compact, sturdy breed, and their juvenile growth period reflects that solid build. Most Scotties reach their full height by around nine to ten months of age, though they will continue to fill out and develop muscle mass through their first year and slightly beyond. During the juvenile phase, which spans roughly three to twelve months, you will see your Scottie transform from a round, clumsy puppy into a more proportioned young dog with the breed's distinctive silhouette beginning to emerge.

Weight gain should be steady and gradual rather than rapid. A healthy juvenile Scottish Terrier will typically gain weight consistently each week, and you should be able to feel the ribs with light pressure without them being visually prominent. Because Scotties are low to the ground and barrel-chested, excess weight is particularly hard on their structure and can contribute to joint strain during a critical developmental window.

The breed's wiry double coat begins to change noticeably during adolescence. The soft puppy coat gradually gives way to the coarser, weather-resistant outer coat that defines the breed. Many owners notice a somewhat scruffy, uneven appearance during this transition. Regular brushing helps manage the changeover, and this is a good time to begin acclimating your Scottie to professional grooming if hand-stripping will be part of their long-term coat care.

Bone growth plates in Scottish Terriers typically close between ten and fourteen months. Until those plates have fully closed, high-impact activities such as repetitive jumping or extended running on hard surfaces should be moderated. Your veterinarian can advise on appropriate activity levels based on your individual puppy's development and may recommend radiographs if there is any concern about skeletal maturation.

Feeding a juvenile Scottish Terrier properly supports healthy growth without encouraging the excess weight that this breed can be prone to. Most Scottie puppies are fully weaned by eight weeks and should be eating a high-quality puppy food formulated for small breeds. Small-breed formulas provide the calorie density and kibble size appropriate for a Scottie's compact jaw and higher metabolic rate compared to larger breeds.

Between three and six months of age, puppies typically eat three meals per day. As growth begins to decelerate around six months, most owners transition to two meals per day. Follow the feeding guidelines on your chosen food as a starting point, but adjust portions based on your puppy's body condition. A Scottish Terrier in ideal condition has a visible waist when viewed from above and a slight abdominal tuck when viewed from the side.

The transition from puppy food to adult food generally occurs between ten and twelve months for Scottish Terriers, though your veterinarian may recommend adjusting this timeline based on your dog's growth curve. When making the switch, do so gradually over the course of seven to ten days, mixing increasing proportions of the new food with decreasing amounts of the old to minimize digestive upset.

Treats are an important training tool during the juvenile period, but they should be factored into your Scottie's overall caloric intake. Choose small, low-calorie training treats and avoid table scraps, which can encourage begging and contribute to weight gain. Scottish Terriers can be selective eaters, so establishing consistent meal times and avoiding free-feeding helps create healthy eating habits that last into adulthood.

The juvenile period is when the Scottish Terrier's legendary personality comes into full bloom. Scotties are famously independent and self-assured, and adolescent dogs often test boundaries with a calm determination that can catch first-time owners off guard. Unlike some breeds that show adolescent rebellion through hyperactivity, a Scottie is more likely to simply decide that a command is optional and walk away with dignified indifference.

Resource guarding can surface during adolescence in Scottish Terriers and should be addressed early with positive, structured training. Scotties are naturally possessive of food, toys, and resting spots, and allowing these tendencies to solidify without intervention can lead to more serious behavioral issues in adulthood. Work with a qualified trainer if guarding behavior escalates beyond mild reluctance to share.

Terrier instincts become increasingly evident during this stage. Your Scottie may begin digging in the yard, chasing small animals with intense focus, and barking at perceived intruders with the deep, authoritative bark that belies their small size. These behaviors are hardwired and cannot be fully eliminated, but they can be managed through appropriate outlets and consistent training. Providing digging areas, structured play, and mental enrichment can redirect these instincts constructively.

Despite their independent streak, juvenile Scottish Terriers form deep bonds with their families. They may follow a preferred person from room to room while still maintaining a certain aloofness with strangers. This is entirely normal for the breed. Socialization during this period is essential to ensure that natural reserve does not tip into suspicion or fearfulness.

Training a Scottish Terrier requires patience, consistency, and a healthy sense of humor. This is not a breed that lives to please in the way a retriever might. Scotties are intelligent and fully capable of learning commands, but they evaluate each request on its merits and may choose not to comply if they see no compelling reason. Positive reinforcement training with high-value rewards is by far the most effective approach.

Housebreaking should be well underway or complete during the juvenile period. Scottish Terriers can be slower to housetrain than some breeds, partly due to their independent nature and partly because their small bladders require more frequent opportunities to go outside. Maintain a strict schedule, reward successes enthusiastically, and clean accidents thoroughly with an enzymatic cleaner to remove scent markers.

Leash training deserves special attention. Scotties were bred to pursue quarry into underground dens, and their prey drive combined with a strong, compact body can make walks challenging if pulling is not addressed early. Teach loose-leash walking using rewards for checking in with you, and consider a front-clip harness to reduce pulling leverage while training progresses.

Recall, or coming when called, is arguably the most important and most challenging command for a Scottish Terrier. Their prey drive can override even well-practiced recall in the presence of a squirrel or rabbit. Practice recall in increasingly distracting environments, always rewarding generously, but understand that off-leash reliability in unfenced areas may never be fully achievable with this breed. A long training lead is a useful compromise for giving your Scottie more freedom while maintaining safety.

Scottish Terriers are energetic but not hyperactive, and their exercise needs during adolescence are moderate compared to many sporting or herding breeds. Two to three walks per day, each lasting twenty to thirty minutes, combined with some structured play, will satisfy most juvenile Scotties. They are enthusiastic walkers who enjoy exploring new routes, sniffing thoroughly, and occasionally alerting the neighborhood to squirrels with their distinctive bark.

Mental exercise is just as important as physical activity for this intelligent breed. Puzzle feeders, scent games, and short training sessions challenge the Scottie's mind and help prevent the boredom-driven behaviors that can emerge in understimulated dogs. Earth dog trials and barn hunt are organized activities specifically designed for terrier breeds and provide excellent outlets for natural digging and hunting instincts.

Be mindful of your young Scottie's physical limitations during growth. Their short legs and long backs mean that repetitive high-impact activities, such as jumping on and off furniture or navigating steep stairs multiple times daily, can put unnecessary stress on developing joints and the spine. Ramps or steps designed for small dogs can reduce impact during this vulnerable period.

Swimming is generally not a natural strength for Scottish Terriers. Their heavy front end and short legs make them poor swimmers, and many Scotties actively dislike water. If your dog does encounter water, always supervise closely and consider a life vest. There are plenty of dry-land activities that will keep your Scottie happy and healthy without requiring aquatic skills.

The decision of when to spay or neuter a Scottish Terrier involves balancing health benefits, behavioral considerations, and the latest veterinary research. Historically, early spay or neuter around six months was standard practice. However, emerging evidence suggests that allowing small breeds to reach skeletal maturity before altering may provide orthopedic and hormonal benefits. Discuss the timing with your veterinarian, who can assess your individual dog's development.

For female Scottish Terriers, spaying eliminates the risk of pyometra, a potentially life-threatening uterine infection, and significantly reduces the risk of mammary tumors when performed before the second heat cycle. The first heat in Scotties typically occurs between six and nine months of age. If you choose to wait, you must be prepared to manage heat cycles and prevent unplanned breeding during this period.

For males, neutering eliminates the risk of testicular cancer and can reduce certain testosterone-driven behaviors such as roaming, urine marking, and inter-dog aggression. However, neutering is not a substitute for training and socialization. Behavioral issues rooted in anxiety, poor socialization, or insufficient exercise will not be resolved by surgery alone.

If you have no intention of responsibly breeding your Scottish Terrier, spaying or neutering is strongly encouraged. The Scottie population benefits from thoughtful breeding decisions, and preventing accidental litters helps reduce the number of dogs in rescue. Whatever timeline you choose, ensure your dog is in good overall health before surgery and follow your veterinarian's postoperative care instructions carefully to support a smooth recovery.

Socialization during the juvenile period is absolutely critical for Scottish Terriers and can make the difference between a confident, well-adjusted adult and one that is fearful or reactive. The primary socialization window closes around fourteen to sixteen weeks of age, but ongoing exposure to new experiences throughout adolescence reinforces and expands upon that early foundation. Scotties that miss this window often develop the breed's natural wariness of strangers into something more problematic.

Introduce your juvenile Scottie to a wide variety of people, including men, women, children, people wearing hats or uniforms, and people using mobility aids. Each interaction should be positive and pressure-free. Allow the puppy to approach at its own pace and reward confident, friendly behavior. Forcing a Scottish Terrier into an interaction it is uncomfortable with can backfire dramatically and create lasting negative associations.

Exposure to other dogs requires careful management. Scottish Terriers can be assertive with unfamiliar dogs, and same-sex aggression is a known trait in the breed. Puppy socialization classes with a qualified trainer provide structured, supervised interactions that teach appropriate greeting behavior and communication. Choose classes that group dogs by size and temperament rather than age alone, as a boisterous large-breed puppy can easily overwhelm or frighten a young Scottie.

Environmental socialization is equally important. Expose your Scottie to different surfaces, sounds, vehicles, crowds, and locations during the juvenile months. Visits to pet-friendly stores, outdoor cafes, and busy sidewalks build confidence and adaptability. Scottish Terriers that are well-socialized during this period are more resilient, more enjoyable companions, and far less likely to develop anxiety-based behavioral issues as they mature.