How to Choose the Right Collar for Your Dog’s Size and Breed
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How to Choose the Right Dog Collar for Your Dog

By Chris Loverseed
Owner, PK9 Gear & Positive K9 Training
Cert III in Dog Training and Behaviour

If your dog is a daily companion, whether you’re walking through the suburbs, hiking bush tracks, or putting in a hard day’s work, choosing the right collar matters more than most people realise.

A dog collar isn’t just an accessory. It plays a direct role in your dog’s safety, comfort, and control.

At PK9 Gear, we design and manufacture premium dog gear in Australia, built for dogs that live active, real-world lifestyles. This guide will walk you through exactly how to choose the right collar based on your dog’s size, behaviour, and daily environment.

Why You Can Trust This Guide

Our recommendations are grounded in practical use—not theory—and align with widely accepted dog safety principles around proper fit, responsible use, and matching gear to your dog’s behaviour and environment.

Why Choosing the Right Collar Matters

A quality dog collar isn’t just something to clip a lead to. The right collar can:

  1. • Make walks and training more manageable
  2. • Prevent escapes, especially with high-energy or narrow-headed breeds
  3. • Avoid injury by reducing pressure on your dog’s neck and spine
  4. • Provide quick access to ID tags for safety

On the other hand, the wrong collar—whether too loose, too tight, poorly fitted, or unsuitable for your dog’s behaviour—can lead to frustration, lack of control, or even injury.

Dog Collar Safety: What Most Owners Overlook

Not every collar suits every dog or situation. Before choosing a collar, it’s important to understand a few key safety principles:

  • Fit comes first: You should be able to fit two fingers between the collar and your dog’s neck.

  • Avoid constant pressure: Dogs that pull heavily may be better suited to a harness during walks.

  • Supervision matters: Training collars (like slip collars) should not be left on unsupervised dogs.

  • Watch for irritation: Hair loss, redness, or rubbing usually means the collar isn’t the right fit or material.

Choosing the right collar is about control and communication—not force.

The Collar Types We Offer (and When to Use Them)

PK9 Gear offers three high-performance collar types, all crafted from premium materials and tested in real-world conditions.

Slip Collars

Slip collars are designed for quick application and reliable control. Unlike choke chains, our slip collars are made with durable, non-abrasive materials and offer a smooth tightening action for gentle correction when needed.

Best for

  • Training sessions
  • Dogs who need responsive correction
  • Controlled environments (not ideal for off-leash use)

Note: Slip collars should always be used in controlled environments and not left on unattended dogs.

Biothane Dog Collars

Our Biothane collars are the ultimate all-weather, all-terrain option. They are waterproof, stink-proof, and incredibly durable, making them perfect for dogs who love to get dirty. It's basically a collar that's as tough as your dog, but it's still just a collar haha. They come in a variety of colours and styles, so you can find the perfect one to match your dog's personality.

Best for:

  • Everyday wear for active dogs
  • Swimming and water activities
  • Dogs with sensitive skin
Martingale Dog Collars

Martingale collars are a gentle and effective way to prevent your dog from slipping out of their collar. They are designed to tighten slightly when your dog pulls, without choking them. This makes them a great option for dogs with narrow heads, like Greyhounds and Whippets, as well as for dogs who are still learning to walk on a loose lead.

Best for:

  • Dogs with narrow heads
  • Escape artists
  • Lead training
Tactical Dog Collars

Built for strength, our tactical dog collars feature rugged materials, high-tensile hardware, and often include control handles for close contact in high-energy or high-risk environments.

Best for

  • Working breeds
  • Large, strong dogs
  • Hiking, camping, and everyday outdoor use

Note: Tactical collars are built for durability and control, but may be too bulky for very small or low-energy dogs.

Leather Dog Collars

Our leather dog collars combine classic style with natural durability that will last. They become more and more flexible over time, and shape to the curvature of your dog’s neck for all-day comfort.

Best for

  • Daily wear for non-working dogs
  • Owners seeking style, durability, and comfort
  • Dogs with sensitivities to synthetic materials

Note: Leather collars are best suited for everyday use but may require extra care in consistently wet conditions.

Quick Comparison: Which Collar is Right?

Collar Type Best For Not Ideal For
Slip Training and control Unsupervised use
Tactical Strong, active dogs Very small dogs
Leather Everyday comfort Wet environments
Biothane Active dogs, water use Dogs who chew their collars
Martingale Narrow-headed dogs, escape artists Unsupervised use
Tab Slip Collar- Ultimate Control - PK9 Gear
Quick buy

Tab Slip Collar- Ultimate Control

AUD 32.95
Quick buy

Biothane Tactical Dog Collar

From AUD 160.00
Leather Dog Collar - Premium latigo Leather - Handmade - PK9 Gear
Quick buy

Latigo Leather Dog Collar – Oily Series (Limited Edition)

From AUD 50.00
Leather Dog Collar - Made With Premium Herman Oak Leather - PK9 Gear
Quick buy

Leather Dog Collar - Made With Premium Hermann Oak Leather

AUD 120.00

Matching Collar Type to Dog Size

Small Dogs (Under 10kg)

Breeds

Mini Dachshund, Jack Russell Terrier, Toy Poodle

Medium Dogs (10–25kg)

Breeds

Kelpie, Staffy, Beagle

Large Dogs (25–45kg)

Breeds

Labrador, Border Collie, German Shorthaired Pointer

Biothane Tactical Dog Collar - PK9 Gear

Giant Dogs (45kg+)

Breeds

Rottweiler, Bull Arab, Great Dane

  • Recommended Collars: Leather Collar, Tactical Dog Collar with grab handle
  • Note: A wide collar helps distribute pressure and makes handling easier in public or working environments.

Breed-Specific Considerations

Some breeds benefit from specific collar choices due to body structure, behaviour, or working roles.

Narrow-Headed Dogs (e.g., Greyhounds, Whippets)

Why: Flat collars may slip off too easily.

Use: Slip Collars provide a snug, controlled fit, while Martingale Collars offer gentle control without choking.

You can also create a custom collar with PK9 to ensure the perfect fit and style for your dog.

Working Breeds (e.g., Belgian Malinois, Australian Shepherds)

Why: High-drive, high-energy behaviour

Use: Tactical Dog Collar for durable, daily use with an optional grab handle.

You can also create a custom collar with PK9 to ensure the perfect fit and style for your dog.

Double-Coated Breeds (e.g., Border Collies, Huskies)

Why: Thick fur can cause matting under rough materials

Use: a Leather Dog Collar or a smooth-edged Tactical Collar to reduce friction.

You can also create a custom collar with PK9 to ensure the perfect fit and style for your dog.

How to Measure Your Dog’s Neck for the Right Fit

  • Use a soft tape measure around the base of your dog’s neck
  • Add two fingers of space for comfort; the collar should be snug but not tight
  • Check sizing monthly, especially for growing dogs or seasonal coat changes

For active or high-drive dogs, ensure the collar cannot slip over the head during movement. Getting the right fit is crucial for your dog's comfort and safety. A poorly fitting collar can cause everything from skin irritation to a dangerous escape. That's why we've put together a comprehensive guide to help you measure your dog's neck correctly. For detailed instructions and a video tutorial, please visit our Dog Collar Size Guide.

Materials We Use and Sell

PK9 Gear is committed to using only premium materials that hold up in real conditions. Our products are made to last, even with dogs that work hard, play rough, or spend time in the elements.

Here’s a closer look at what we use in our collars:

Materials
Where You'll Find It
Benefits

Heavy-Duty Webbing

Slip Collars, Tactical Dog Collars

Lightweight, strong, dries quickly, resists abrasion and mildew

Stainless Steel, Brass or Black Coated Metal Hardware

All Collars

Rust-resistant, secure, and doesn’t crack like plastic buckles

Full-Grain Leather

Leather Dog Collars

Durable, ages beautifully, softens over time, breathable

Reinforced Stitching

All Collars

Increases strength and lifespan, reduces risk of failure under load

Biothane

Biothane Dog Collars

Waterproof, stink-proof, easy to clean, durable

Bluewater Rope

Slip Collars

Strong, lightweight, durable, and resistant to abrasion

Standard Collar Mistakes (And How to Avoid Them)

We never cut corners on materials. All PK9 Gear collars are crafted with performance and longevity in mind, tested in the kinds of conditions most cheap imports wouldn’t survive. Even experienced dog owners can fall into these traps:

Using a collar that’s too loose

Measure and choose based on neck circumference, not guesswork

Ignoring your dog’s breed or energy level

Attach the collar to the job, a tactical collar for a working dog, a soft leather collar for daily walking

Leaving on a frayed or stiff collar

Inspect your dog’s collar regularly and replace it when it shows signs of wear.

Choosing fashion over function

Prioritise durability, comfort, and fit, especially for active or strong dogs

Remember, choosing the right collar is essential for your dog's safety and comfort. Take the time to find the perfect fit!

Collar vs Harness: Which Should You Choose?

While collars are essential for identification and control, they aren't always the best option for every situation.

A harness may be a better choice if:

  • Your dog pulls heavily on walks
  • Your dog has neck sensitivity
  • You are training loose-lead walking

Collars are ideal for:

  • Identification and general use
  • Dogs who walk calmly without pulling

Many owners use both:

1
Collar
For identification and general use
2
Harness
For walking and training

How to Know It's Time for a New Collar

  • Your dog has outgrown their current one

  • The collar is frayed, rusted, or unreliable

  • Your dog's behaviour (pulling, reactivity) has changed

  • You're upgrading from low-quality gear to something built to last

When you're ready to invest in gear that matches your dog's needs, we've got you covered.

Why Dog Owners Choose PK9 Gear

Designed and made in Australia

Built for real dogs in real conditions

Trusted by working dog handlers, tradies, and adventurers

Focused on quality over quantity

We know you want gear that's not going to let you down, and that's just as happy hiking in Tassie, camping in the Outback, or working on site with your dog by your side.

Find the Right Fit with PK9 Gear

Every dog deserves a collar that fits their lifestyle, not just their neck. At PK9 Gear, we believe in creating products that work as hard as your dog does.

Explore our three premium collar categories:
Slip Collars Tactical Dog Collars Leather Dog Collars Biothane Dog Collars Martingale Dog Collars

Your dog doesn't need more gear; they need the right gear.

Shop Now
Set of blue and red dog collars with 'PK9' branding on a light gray background

Frequently Asked Questions

  • What is the safest dog collar?

    A properly fitted collar suited to your dog’s size and behaviour is the safest option.

  • Should dogs wear collars all the time?

    Not always. Some collars, particularly training collars, should only be used under supervision.

  • Is a harness better than a collar?

    For dogs that pull or have neck sensitivity, a harness can be a better option for walks.

Chris Loverseed
About the author

Chris Loverseed

Chris Loverseed is the Head Trainer and founder of Positive K9 Training and PK9 Gear. With years of extensive experience working with high-drive dogs, including his own two beloved German Shepherds, Chris possesses a deep understanding of effective canine training and the critical role of quality equipment. His unwavering passion for canine performance and dedication to empowering dog owners to forge stronger bonds with their companions inspired him to create PK9 Gear—a brand trusted by serious trainers and dog sport competitors across Australia and beyond. Chris firmly believes in providing gear that not only endures the toughest conditions but actively supports real training goals, ensuring every interaction with your dog is a rewarding and successful experience.

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