6-Month-Old Puppy Guide: Adolescence Begins

By Tailwisp Editorial TeamUpdated October 17, 20263 min read

Six months is a threshold. Your puppy is no longer a baby, but not yet an adult. It has long legs, adult teeth and a strong sense of what it wants. It may also seem to have forgotten everything you taught it. Welcome to adolescence.

What is happening

During adolescence, hormones surge, brain connections reorganize and independence grows. Puppies may seem to forget cues they knew well, or ignore you for more interesting things. Many go through a second fear period, becoming suddenly wary of familiar things. Sexual maturity can arrive, especially in intact dogs, bringing marking, mounting and heat cycles. It is a rough patch, but it passes. See our overview of adolescence.

Common behavior changes

• Selective hearing. Cues that worked indoors fail outdoors.
• More pulling and distraction. The world is more exciting than you.
• Increased energy. Adolescents have plenty of it.
• New fears. A previously fine item or person may cause alarm.
• Testing boundaries. Puppies may try behaviors like jumping, mouthing or counter surfing again.
• Reactivity. Some puppies start barking or lunging at dogs or people.

How to respond

1. Stay calm and consistent. Reacting with anger can damage trust.
2. Revisit basics. Go back to easier steps and rebuild.
3. Raise reward value. Use better treats and toys.
4. Manage the environment. Use long lines, fences and gates to prevent rehearsing bad habits.
5. Exercise body and mind. Provide walks, training games and enrichment.
6. Keep socializing, gently. Keep exposure positive and avoid overwhelming your puppy.
7. Keep sessions short. Frequent, brief training works best.

Training priorities

• Recall. Keep using a long line, and reward every return. See our recall training guide.
• Loose leash walking. Continue practicing, and use gear that helps.
• Impulse control. Reward patience and calm.
• Settle. Teach your puppy to relax on a mat.
• Alone time. Maintain gradual practice.

Exercise

Aim for regular walks, play and mental stimulation. Avoid very strenuous or repetitive exercise, especially for large breeds, until growth plates have closed. Provide chew toys and puzzle feeders to prevent boredom. See our guide to exercise limits by age.

Feeding and health

Continue puppy food unless your vet advises otherwise. Monitor weight and body condition. Review parasite prevention, vaccinations and dental care. Discuss spay or neuter timing, and be prepared for a possible heat cycle if your female is intact. Our puppy vet checklist outlines the year.

Size and growth

By six months, many small breeds are close to adult height, while large breeds may have gained half or more of their adult weight. See how big will my puppy get for estimation methods.

Keep perspective

Adolescence can be frustrating, but it is temporary. Many owners find that their dog's behavior improves markedly by around eighteen months to two years. Keep up your training, and remember that your puppy is learning how to be an adult.

Choosing your battles

Not every adolescent behavior deserves a lesson. Decide which three behaviors matter most for safety and sanity, such as coming when called, not bolting through doors and not mouthing people, and train those daily. Let smaller annoyances pass while you build the bigger skills. A puppy that gets rewarded for four of five good decisions will improve faster than one whose owner corrects every misstep.

Also keep a short training diary. Note what worked, where your puppy struggled and what distractions made it fail. Patterns usually jump out within a week, and they tell you what to practice next. If a behavior gets noticeably worse over several weeks, such as fear of strangers or lunging at dogs, ask a qualified trainer for a consult early, before it becomes a habit.

The takeaway

Six months is the start of the teenage years. Be consistent, kind and patient, and keep life interesting. Continue with our 7-to-9-month guide.