Personalized Chart
Enter age and weight to see your dog's unique trajectory.
Puppy Predictor
Harrier Size Calculator
How big will my Harrier get? Predict adult weight and track your puppy's development.
Start with these for your Harrier
We picked these products to help you take better care of your dog day to day, from a more comfortable place to sleep to safer walks, easier feeding, and the right setup at home. Each category is narrowed to options that are highly rated and make sense for your dog's size and stage.
Roomy crates
Top Rated
Amazon Basics Folding Metal Crate with Growth Divider
★ 4.7
(11.0k)$52.74
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Comfy beds
Top Rated
EHEYCIGA Orthopedic Washable Memory Foam Bed
★ 4.5
(19.6k)$39.98
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Walk-ready harnesses
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BARKBAY No-Pull Comfort Walking Harness
★ 4.5
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Slow feeders
Keegud Raised Slow Feeder for Better Digestion
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After your estimate
First-year playbook for Harrier puppy parents
Harrier puppies are beagle-sized marathon hounds built for pack hunting. Your growth chart pairs with lean condition honesty, fence security, and training before the nose hijacks adolescence.
After the projection
Harriers often look lean; your veterinarian confirms healthy athlete versus underfed.
Muscle builds with age; compare trends over weeks, not one pack-day weigh-in.
When growth eases, treat drift shows if weekday walks shrink but weekend leftovers grow.
- Weigh every 2 to 3 weeks on the same scale.
- Monthly photos from above.
- Log treats; affectionate hounds train on food and love.
- Limping after long days needs vet input.
Reading growth on a Harrier
Drop ears need routine checks; moisture and debris stack infection risk.
Off-leash is risky near roads and wildlife; independence plus nose is expensive.
Teen listening dips are normal; simplify criteria, raise pay rate, end on wins.
- Measure food by weight; deep-chested hounds eat enough that scoop error matters.
- Recall on long line for life.
- Heat planning; water and shade on warm days.
- Sniff walks are real exercise; miles without nose still leave hounds wired.
What changes month to month
Puppyhood is not one stage. It is a stack of different problems and wins. Use this like a timeline, not a rigid rulebook.
- Phase 18 to 12 weeks: pack baby
Routine, gentle handling, calm exposure.
- Crate and potty rhythm.
- Feet, ears, mouth handling with food.
- Socialization at easy distances.
- Start markers indoors.
- Introduce alone-time in tiny increments.
- Phase 23 to 6 months: coordination + nose
Leash skills before strength wins.
- Reward check-ins on leash.
- Wait at doors.
- Continue stable-dog greetings.
- Short reps, many rounds daily.
- Scent games at home.
- Phase 36 to 18 months: teenage Harrier
Endurance build + voice awareness.
- Daily sniff walks and allowed scent work.
- Recall on long line.
- Watch weight as growth slows.
- Early help if reactivity appears.
- Fence integrity checks.
- Phase 418 to 24 months: young adult
Stamina matures.
- Exercise duration and terrain per veterinary guidance; marathon heritage needs joint-smart build-up.
- Keep measuring meals; swim or hunt days do not erase calories from extras.
- Continue training for life—recall, leash, and household calm.
- Discuss prevention your vet recommends as young adulthood firms up.
- Ear checks after wet or brushy work; establish a normal baseline.
Start with these for your Harrier
We picked these products to help you take better care of your dog day to day, from a more comfortable place to sleep to safer walks, easier feeding, and the right setup at home. Each category is narrowed to options that are highly rated and make sense for your dog's size and stage.
Daily care
Feeding, exercise, training, home setup, and prevention. Each block is written for people who just checked their puppy’s weight curve.
Feeding Harrier puppies
Your veterinarian picks puppy nutrition for steady growth on a deep-chested frame.
Measured meals make hound training honest.
Transition foods over ~7 days unless your vet directs otherwise.
- Cap daily treat budget; log training jackpots.
- Weight honesty: ribs easy to feel when fit.
- Ask before supplements marketed for joints.
- Discuss large-meal timing and bloat awareness with your vet as your dog matures.
Exercise with hound honesty
Sniff walks and age-appropriate mileage beat empty laps.
End before overtired mouthiness or hound song that wakes the block.
Heat planning; pause before distress panting.
- Stop if limping or if the next morning is stiff.
- Carry water on warm outings.
- Leash near traffic; pack-friendly does not mean traffic-safe recall.
Training friendly hounds
Patience and high-value rewards; nagging teaches selective hearing.
Socialization is pairing and distance; calm novelty beats chaotic stacking.
Teach calm default behaviors between scent adventures.
- Calm sits before doors open.
- Muzzle conditioning with positive methods only if your team recommends safer handling.
- Early help if separation distress escalates.
Home structure
Secure fencing and latches; Harriers roam with nose.
Neighbor voice plan: outlets before complaints.
- Rotate enrichment—scent boxes, chews, puzzles.
- Trash secured.
- Gates when unsupervised.
Preventive care
Hips, eyes, and thyroid topics appear in hound conversations; your vet personalizes.
Dental tolerance training while young pays off for life.
Parasite control should match your region and pack or trail exposure.
- Weight log at visits.
- Video limping, head shaking, or ear odor.
- Breeder screening notes on file.
When to call your veterinarian
If you are unsure, call your veterinarian, especially with puppies. This list is not complete and does not cover every situation. It is a general reminder of signs many clinics want to hear about.
- Non-weight-bearing lameness or severe pain.
- Painful ear, head tilt, foul odor, or non-stop head shaking.
- Severe vomiting or diarrhea with lethargy.
- Bloat signs: painful swollen belly, unproductive retching, restless pacing; emergency.
- Eye injury or sudden vision change.
- Heat distress—collapse, vomiting, distress panting; emergency.
General educational information only. It is not medical advice and does not replace an exam or treatment plan from a licensed veterinarian. Estimates and tips cannot diagnose illness or emergencies; contact your vet with any health concerns.
Breed Overview
About the Harrier
Friendly, outgoing, and active
Group
Hound
Size Category
Medium
Lifespan
12-15 years
Full Maturity
15 months
Temperament Traits
OutgoingFriendlyCheerfulActiveIntelligentGentle
Growth & Height Benchmarks
Expected Adult Weight
45-60lbs
Typical Male
45-60 lbs
19-21" tall
Typical Female
45-60 lbs
19-21" tall
Similar sized breeds
Breed history
Where Harriers come from
Harriers were developed in Britain as scenthounds hunted on foot in packs, sized between Beagles and English Foxhounds for hare and trail work.
They were bred for stamina, voice, and friendly pack social behavior.
Modern Harriers are rare pets with real exercise needs; bored hounds sing and roam.
How the Harrier calculator works
1
It uses age and current weight
The calculator uses your puppy's current age and weight to estimate adult size. Because puppies grow fastest early on and then slow down as they mature, the estimate adjusts for the stage of growth your Harrier is in.
2
It compares against typical breed growth
Harriers are usually close to full size by around 15 months. As your puppy gets older and more of its growth is already complete, the estimate usually becomes more reliable.
3
It checks the estimate against the usual range
Most adult Harriers fall within a typical weight range of 45-60 lbs. You can use the calculator for younger puppies, but estimates are usually more accurate after about 12 weeks.
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