









(4.8) 11,231+ Reviews
PawFence - Collar extender
For pups who need an extra inch or two. The PawFence Collar Extender adds up to 30 extra inches of length to your PawFence collar strap, so dogs with necks thicker than 30 inches get a secure, comfortable fit. It clips right onto your existing collar with quick-release buckles and adjusts down to whatever length your dog needs, so you only add as much as they need. Made from durable nylon webbing with reflective stitching for added visibility on evening walks. A simple fix for big-necked breeds, fluffy coats, or any dog who's just a little more to love.
No subscriptions or monthly fees
Contains & trains your dog
Quick setup & waterproof
Control up to 3 dogs with one remote
Collar extender only. Looking for the complete system? Click here.
Build Your Pack:

Best Value
One Collar
(12 Treatments • 6 Month Supply)
SAVE
Most Popular

Two Collars
(8 Treatments • 4 Month Supply)
SAVE
Best Value

Three Collars
(4 Treatments • 2 Month Supply)
SAVE

90-Day Money Back Guarantee
Do I need my phone, an app, or WiFi?
Nope, none of it. Everything's controlled right from the handheld remote. No app, no WiFi, no monthly fees, ever.
What happens when my dog reaches the boundary?
A gentle beep first, then a vibration, then optional static, all adjustable 0–9 and each one can be turned fully off. Most dogs learn the line in a few days.
Is it just a fence, or can I train with it too?
Both. Set the GPS boundary at home, then grab the remote to correct your dog anywhere, up to 1,650 ft away. A fence and a trainer in one collar.
Will it fit my dog?
Fits dogs 10–200 lbs with 10–30 inch necks, fully adjustable strap. Big, small, and every escape artist in between.
What if it doesn't work for my dog?
You're covered by our 90-day guarantee. Give it a real shot, and if your dog still isn't staying put, we'll make it right.
Do I need my phone, an app, or WiFi?
Nope, none of it. Everything's controlled right from the handheld remote. No app, no WiFi, no monthly fees, ever.
What happens when my dog reaches the boundary?
A gentle beep first, then a vibration, then optional static, all adjustable 0–9 and each one can be turned fully off. Most dogs learn the line in a few days.
Is it just a fence, or can I train with it too?
Both. Set the GPS boundary at home, then grab the remote to correct your dog anywhere, up to 1,650 ft away. A fence and a trainer in one collar.
Will it fit my dog?
Fits dogs 10–200 lbs with 10–30 inch necks, fully adjustable strap. Big, small, and every escape artist in between.
What if it doesn't work for my dog?
You're covered by our 90-day guarantee. Give it a real shot, and if your dog still isn't staying put, we'll make it right.
Dog Trainer Recommended
Contains & Trains
No Monthly Fees
Wireless GPS Boundary
Works Up to 50 Acres
Dog Trainer Recommended
Contains & Trains
No Monthly Fees
Wireless GPS Boundary
Works Up to 50 Acres
Join Thousands of Dog Owners Who Stopped Worrying

"Finally trust him off leash in the open"
"We adopted Cooper knowing he was a flight risk and our trainer wanted $2,800 for a full recall program with no guarantee it would even stick. We tried this collar instead. Set the boundary at the park we go to every morning, and within about a week he understood exactly where the edge was. Now he runs full speed and circles right back to us. The beep does all the work, we almost never go past that. Watching him actually be a dog without me holding my breath is everything."
— Marcus and Devon Riley, Bloomington IN
Verified Buyer, purchased August 12th 2025

"No more getting dragged down the block"
"Every walk with Sunny used to wreck my shoulder. She pulled the entire time and I dreaded taking her out. What sold me was that this is a fence AND a trainer in one. I use the remote on our walks now, a quick vibrate when she lunges and she settles right down. Three weeks in and she walks next to me like a completely different dog. I was quoted $1,500 for group obedience classes and this did more in a month. The remote is simple, my battery goes about four days."
— Janet Collins, Naperville IL
Verified Buyer, purchased July 29th 2025

"Wish I'd started this when he was a puppy"
"My biggest regret is not getting this the day we brought Ziggy home. We let the puppy stage slide and by a year old he thought the whole neighborhood was his. Started fresh with this collar and even a little late he picked up the boundary in maybe eight days. If you have a young dog, do it now while their habits are still forming. Adjustable modes meant I started with just the beep on the lowest setting. Never had to go higher. He is 100 percent trustworthy in the yard now."
— Hannah Voss, Fort Collins CO
Verified Buyer, purchased June 3rd 2025

"My door dasher finally stopped bolting"
"Bailey is a beagle so a nose with legs. The second the front door cracked open she was gone, straight for the street, and I lived in fear of it. Getting my yard properly fenced was going to run me around $4,500 and I rent, so that was never happening. This collar fixed the exact problem I thought was unfixable. She learned where the line is and now she waits by the door instead of blowing past me. I actually sleep at night. Set it up on the remote in one afternoon."
— Terrence White, Springfield MO
Verified Buyer, purchased March 5th 2026

"Contained a working breed with zero digging"
"Everyone warned me a border collie needs a real fence or he'd find a way out, and the quote to fence our whole yard was $6,000. No thanks. Rocky is smart and stubborn but he figured out the boundary in under a week. Best part, no trenching, no wires buried in my lawn, no contractor. I set the shape myself and it wraps around our weird angled yard perfectly. He plays like a maniac right up to the edge and never crosses. Battery easily lasts me four days."
— Colleen Ferraro, Erie PA
Verified Buyer, purchased October 18th 2025

"One remote runs all three of mine"
"I've got three dogs on twelve acres and fencing that was a fantasy, plus a trainer wanted about $3,000 per dog for boundary work. That math doesn't work with three. This is the only thing I found where one remote handles all three collars, and that alone paid for itself. Set the boundary once, each of them learned it inside a week. I flip between channels one, two and three right on the handheld. Waterproof too, which matters because these guys are always in the creek. Should have done this years ago."
— Wade Comstock, Bowie TX
Verified Buyer, purchased May 22nd 2025

Over 18,340+ DOG OWNERS KEEP THEIR DOGS SAFE daily
So easy to use
"Had the boundary set in one afternoon, no digging, no wires, nothing. My lab figured out the line in about three days. Easiest thing I've ever done for him."
— Amanda R., Sacramento, California.
Perfect for my senior boy
"My 11-year-old still likes to wander off. A gentle beep and he circles right back now. No stress, no chasing him down the road at 6am anymore."
— Greg P., Nashville, Tennessee.
Saved me thousands
"I was quoted $6,000 to fence our property. Got this instead, and my shepherd hasn't crossed the line since. Paid for itself the day it arrived."
— Amanda S., Austin, Texas.
Works for both our dogs
"Two escape artists, one remote. Set boundaries for both and I control them from one handheld. Total game changer — they finally just stay in the yard."
— Jack M., Denver, Colorado.

Secure Checkout Guaranteed

FAQS
Can I choose the boundary shape and size?
Yes. Go from a small backyard all the way up to 50 acres, and shape the boundary to fit your property, circle, square, or any custom shape you set.
How small a yard does it work in?
Small yards are no problem. Set the boundary as tight as you need, no half-acre required.
How often do I charge it?
About every 4 days, depending on use. It's fully waterproof too, so rain, mud, and swims are all fine.
Will it work for a stubborn escape artist?
That's exactly who it's built for. Adjustable static levels and included training stakes handle even the most determined bolters.
How does it compare to Halo?
Same GPS idea, without the $600+ price tag or the monthly subscription. One-button setup, no app required.
Does it work in wooded or rural areas?
Yep, it runs on satellite GPS outdoors. Very heavy tree cover or tall buildings can weaken GPS on any device, but most yards work great.
Where do you ship?
We ship Worldwide! Wherever you are, you can set a boundary for your best friend.