1 / 7
Help your anxious dog finally relax
A drug-free calming collar your dog wears next to their regular one. Inside are Gladiator's patented ceramics, which turn your dog's own body heat into far-infrared energy. It helps tense muscles loosen and your dog relax, so the dog who paces, shakes, barks and chews can settle down.
- Separation anxiety
- Storms and fireworks
- Car rides
- Vet and groomer visits
- Restless nights
- Crate rest
- Everyday stress
As low as $33/mo with Affirm.
- Wrap a soft tape around the middle of your dog's neck, where their collar sits.
- Slip two fingers under the tape. That measurement is the one to match.
- Pick the size whose range it falls in.
Still not sure? Call us at +1-610-215-2004 and we'll help you pick. Full size guide
Nicole, Saint's owner: "Without Gladiator, my sweetheart, Sainty baby, wouldn't be able to do half the things he is able to do today."
- Patented ceramic technology
- No refills, batteries or charging
- Made in the USA
It isn't bad behavior. It's stress.
The chewed door frame. The barking at every car that passes. The shaking in the back seat, the pacing at 2 a.m. An anxious dog isn't being difficult: their nervous system is stuck in fight-or-flight, and scolding, crating or wearing them out doesn't switch it off.
- A vest or wrapGoes on once the panic has already started.
- A pheromone collar or diffuserRuns out every four weeks, and a diffuser only covers one room.
- Calming chews or medicationHas to be dosed ahead, and wears off.
More than a collar
It looks like a padded collar. Inside, it's lined with Gladiator's patented SemiCera® ceramics, technology Gladiator first developed for people. Here's what happens once it's on.
- 1Your dog's body heat activates the ceramics
The collar sits on the neck, where the skin runs warm. That body heat is what activates the ceramics.
- 2The ceramics send back far-infrared
They return that heat as far-infrared energy in the 3 to 16 micron range, a wavelength the body absorbs.
- 3The body comes out of fight-or-flight
Far-infrared helps the muscles of the neck and back relax, and your dog's body follows. Owners see it in the body first: the muscles soften, the yawning starts, and the dog who was pacing lies down.
The K-Nine isn't for a leash or ID tags. It's for calm, and it sits alongside the collar your dog already wears.
See the change for yourself
0:29Without Gladiator, my sweetheart, Sainty baby, wouldn't be able to do half the things he is able to do today.
Saint
0:30Once always on the go, now he can focus and follow commands.
Blue Heeler
1:47He really does love this thing.
Leo, 7
0:30His muscles eased, and for the first time, he yawned.
Corgi / Shepherd mix
Calmer, and healthier for it
Calm is where it starts. A dog who isn't running on stress sleeps better, listens better and moves more easily, and the collar supports all of it.
- Less barking, pacing and chewing
It helps ease the behaviors stress drives: barking, whining, pacing, chewed furniture, shaking, aggression and hiding.
- A looser neck and back
Sitting on the neck, the ceramic eases the muscle tension an anxious dog carries through the neck and back.
- Sleep that lasts the night
With the body relaxed, the dog who paces at 2 a.m. can settle and stay asleep.
- A dog who listens
A calmer dog can focus. Owners use it as a training and crate-training tool, and over time it can change how a dog behaves.
- Support for healthy ears
Worn at the neck, it supports healthy circulation to the head and ears. Owners of dogs with sensitive ears tell us they notice the difference.
- Easier rest days
It supports healthy circulation and muscle relaxation, and a calm dog rests more easily. Owners keep it on through crate rest and the quiet weeks when their dog has to take it easy.
Drug-free, with no known side effects, and safe to wear around the clock.
One collar, instead of a cupboard of fixes
Most owners have tried something already. Here's how the K-Nine stacks up against the usual fixes, and what each one costs to keep going.
| K-Nine Collar | Calming vest | Pheromone collar | Calming chews | |
|---|---|---|---|---|
| When it works | All day. It's already on before the storm starts. | Once you put it on, usually after the panic has started. | All day, while the scent lasts. | Once each dose kicks in, then it wears off. |
| What you keep buying | Nothing. The ceramic doesn't wear out. | Nothing, until your dog outgrows it. | A new collar every 4 weeks. | A new bag every 1 to 3 months. |
| What's in it | Patented ceramic. Drug-free, nothing to swallow. | Pressure from a snug wrap. | A synthetic pheromone. | A supplement your dog eats every day. |
| Cost per year | $395 to $545 once, then nothing | About $40 to $52 | About $230 (13 collars) | About $140 to $280 |
Made by a medical technology company
- Born in medicine
The ceramic comes from Gladiator Therapeutics, which developed it for use in people before bringing it to horses and dogs. It's patented, and the research behind the technology is published in a peer-reviewed journal. Read the study
- Trusted at the top of horse sport
Gladiator Equine puts the same ceramic in gear used by a Belmont Stakes winning trainer and international Grand Prix riders.
- Made for a lifetime
The ceramic doesn't wear out. The collar your dog wears this year is the one they'll wear for life.
- Made in the USA
Built in America with a tear-resistant shell, rare earth minerals and medical-grade silicone.
A calmer dog, or your money back
Put it on and watch how your dog settles over the next 30 days. If you don't see the difference, send it back.
Find their size
| Size | Neck | Price |
|---|---|---|
| Extra-Small | 9–13" | $395 |
| Small | 13–16" | $395 |
| Medium | 16–18" | $445 |
| Large | 17.5–20" | $495 |
| Extra-Large | 20–23" | $545 |
How to measure
- Wrap a soft tape around the middle of your dog's neck, where their collar sits.
- Slip two fingers under the tape. That's the number to match.
- Between sizes, or measuring a growing puppy? Call us at +1-610-215-2004 and we'll help you choose.
How soon will I see a difference?
The ceramic starts working once your dog's body heat activates it. Some owners see their dog settle that first day; for others, the change builds over a few weeks of daily wear. That's why you get 30 days to judge it.
Is it safe for puppies and older dogs?
Yes. It can be used on dogs of every size and age. It's non-invasive and non-toxic, has no known side effects, and is safe to wear without limits.
My dog is on medication or working with a trainer. Can they wear it too?
Yes. The collar is drug-free, so it can sit alongside whatever your dog's routine already includes. If your dog is on a prescribed plan, keep to it, and check with your vet before you change anything.
Does it replace my dog's regular collar?
No. Your dog wears it next to their everyday collar. The K-Nine is made for calm, not for holding a leash or controlling your dog on walks.
Should I put it on when the storm starts?
It works best if it's already on. The ceramic needs some time on your dog to be activated by body heat, so let your dog wear it all day instead of saving it for the bad nights.
Can my dog sleep in it?
Yes. It's made for non-stop wear, overnight included.
Does the calm last once it's off?
No. The effect fades soon after the collar comes off, which is why it's made to be worn every day.
Can it help my dog's ears?
It supports healthy circulation around the head and ears, and owners of dogs with sensitive ears tell us they've noticed a difference. It isn't a treatment for an ear infection; if you think your dog has one, see your vet.
Does it get hot? Can it get wet?
It doesn't produce any heat. It's waterproof. To clean it, hand wash with a mild detergent; don't put it in the washing machine.
What if it doesn't work for my dog?
Give it 30 days of daily wear. If your dog isn't calmer, call +1-610-215-2004 and we'll take it back and refund you.
Powered by Gladiator Therapeutics
Gladiator K-Nine comes from Gladiator Therapeutics, the R&D company behind the patented ceramic emitters. The technology was developed for people before it came to animals.
Read our story
Gladiator Equine
The same ceramic in ear plugs, poll pads, boots, wraps and blankets, used by top trainers and Grand Prix riders.
Visit Gladiator Equine10% off your first order
Calm-dog tips, new products and early access to offers.