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Every Saint Bernard needs a collar to carry identification, but choosing one for a giant, drooling, heavy-coated dog raises some specific issues. A Saint’s neck is thick and muscular, its coat can mat under a collar and drool often soaks whatever sits around its neck. The best collar for a Saint Bernard is sized for a giant neck, comfortable enough for daily wear, easy to clean and secure enough that the dog cannot slip out of it. Here is what to consider.
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Neck size and fit
Adult Saint Bernards typically have a neck circumference of about 24-32 in, depending on sex and build. Males usually need the larger end. Measure your dog’s neck at its base, where the collar sits, with a soft tape snug against the skin under the fur, and add about 2 in for a comfortable fit. You should be able to slide two fingers under a properly fitted flat collar, but not slip it over the dog’s head.
ADITYNA Heavy Duty Dog Collar for Large Dogs with Traffic Handle
Included for 'Best dog collar for saint bernard 2026' as a relevant option in this category; details come from the product listing.
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ADITYNA Heavy Duty Leather Dog Collar for Giant Dogs, Adjustable 30-36"
Included for 'Best dog collar for saint bernard 2026' because the listing specifies Adjustable 30-36", details this guide uses to compare options.
View on AmazonCollar types for a Saint
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Wide flat collar
A flat collar 1.5-2 in wide spreads pressure over a larger area and suits a giant dog’s neck. Leather is comfortable, durable and looks good, but it must be kept dry and conditioned. Biothane is waterproof and easy to clean, which is ideal for a drooling breed.
Martingale collar
A martingale tightens slightly when the dog pulls back, preventing it from backing out of the collar, then loosens again. It is a good choice for walks with a Saint that pulls or startles, as long as it is fitted correctly.
Rolled leather collar
Rolled collars are round rather than flat, which helps prevent matting and breakage in longer coats. They are a good ID-only option for long-haired Saints.
Breakaway collar
A breakaway buckle releases if the collar is caught, reducing the risk of strangulation. It is a safe choice for dogs left alone or playing with other dogs, but not for leash walking.
| Collar type | Recommended width | Best for | Consider |
|---|---|---|---|
| Flat biothane | 1.5-2 in | Daily wear, drooly dogs | Waterproof, easy to wipe clean |
| Flat leather | 1.5-2 in | Daily wear, comfort | Needs to be dried and conditioned |
| Martingale | 1.5 in | Walks, escape prevention | Fit so rings do not meet when tight |
| Rolled leather | About 3/4 in round | ID on long-haired Saints | Not for strong pulling |
| Prong or choke chain | Not recommended | – | Can cause pain and neck injury |
Collar or harness for walking?
For most Saints, it is better to use the collar for ID and attach the leash to a well-fitted harness. A harness spreads force across the chest and gives you more control of a giant dog with less strain on its neck. If your Saint walks politely on a loose leash, a wide flat collar or martingale is fine for walking. Avoid choke chains and prong collars, which can cause pain, injury and fear.
Dealing with drool and skin
Drool can soak into collars and the fur underneath, leading to odor, matting and skin irritation. Choose a collar made from waterproof material, wipe it down daily if needed and remove it periodically to let the skin breathe. Check under the collar weekly for redness, sores or matting, especially in long-haired Saints and in humid weather.
ID and safety
Attach a clearly engraved ID tag or use a collar with an engraved nameplate. Include your phone number and, if relevant, any medical needs. A microchip is essential backup, as collars can come off. Reflective stitching helps visibility on dark winter walks.
Checking the fit as your Saint grows
Saint puppies grow extremely fast, sometimes gaining several pounds a week. Check collar fit at least weekly during the first year and loosen or replace it as needed. A collar that was fine a few weeks ago can quickly become too tight.
FAQ
What size collar does a Saint Bernard need?
Most adult Saints need a collar that fits a neck of about 24-32 in and is 1.5-2 in wide. Measure your dog, as individual size varies a lot.
How do I stop my Saint Bernard’s collar from smelling?
Choose waterproof biothane, wipe it clean regularly, remove it to let the skin and fur dry and wash it with mild soap. Persistent odor from the neck area can indicate a skin infection, so check with your vet if it continues.
Bottom line
The best collar for a Saint Bernard is a wide, 1.5-2 in flat collar in biothane or leather, or a martingale for dogs that might slip out, used mainly for ID while a harness handles walks. Measure the neck carefully, check fit often in growing puppies, keep the collar clean from drool and add a clear ID tag and microchip. Simple choices, but they make a big difference with a giant breed.
