Apple AirTags have become one of the most popular ways to track a dog if they get loose. They are small, affordable, and connect to the Find My network — which means as long as any iPhone is within Bluetooth range of your dog, their location updates automatically. For owners of dogs that are prone to escaping, or who simply want peace of mind on off-leash walks, an AirTag on the collar has become a sensible precaution.
The collar itself matters more than most people initially consider. An AirTag holder attaches to the collar, which means the collar needs to be durable enough to hold the holder securely, water-resistant enough that the AirTag stays functional in wet conditions, and constructed in a way that the holder does not slide or rotate out of position during a walk. A fabric collar that absorbs water, softens, and stretches is not going to hold anything reliably in the rain.
This guide covers what to look for in a waterproof collar for AirTag use, what collar materials perform best, and how to fit the holder correctly so it stays where it should.
Does an AirTag Actually Work on a Dog Collar?
Yes — with some practical caveats worth understanding before you buy.
An AirTag does not transmit a GPS signal directly. It uses Bluetooth to connect to nearby Apple devices, which then anonymously relay the location to iCloud. This means tracking works well in populated areas where iPhones are common — cities, suburbs, parks — but may update less frequently in rural or remote areas with fewer Apple devices around.
The AirTag itself is rated IP67 water resistant, meaning it can handle submersion in up to one metre of water for up to thirty minutes. The holder that attaches it to the collar is a separate accessory and varies in its own water resistance depending on the material. For active dogs that swim, the combination of an IP67 AirTag in a waterproof silicone or aluminium holder, attached to a waterproof collar, covers most real-world scenarios.
The biggest practical limitation is that AirTag tracking is passive — it updates when an iPhone passes by, not in real time. For real-time GPS tracking, a dedicated GPS tracker collar is the right tool. For finding a lost dog in a typical suburban or urban environment, an AirTag is usually sufficient and significantly cheaper to run.
What Makes a Collar Good for AirTag Use
Not every collar is equally well-suited to holding an AirTag holder. These are the features that matter:
Waterproof or water-resistant construction
A collar that absorbs water becomes heavier, softer, and less dimensionally stable when wet. This affects how securely the AirTag holder sits — a collar that has swollen or stretched slightly in the rain will hold the holder more loosely than when dry. PVC-coated webbing (sometimes called BioThane-style coated webbing) does not absorb water at all. It wipes clean, dries instantly, and maintains its stiffness and shape in wet conditions, which means the holder stays exactly where you put it regardless of weather.
Consistent width along the collar band
AirTag holders are designed for a specific collar width — most commonly 25mm (1 inch). A collar that tapers toward the ends or varies in width will not hold the loop-style holder securely. A flat, consistent-width collar keeps the holder in the correct position and prevents it from sliding toward the buckle or ID ring where it can interfere with the fit.
Metal hardware at the D-ring
Most AirTag holders loop around the collar and sit near the D-ring or ID tag attachment point. A collar with a metal D-ring provides a stable anchor point and does not flex or deform under the combined weight of ID tags, an AirTag holder, and a leash clip. For larger dogs, the D-ring needs to be rated for the pulling force as well — zinc alloy is the standard for durability.
A secure, reliable buckle
If the collar comes off, the AirTag comes off with it. A collar with a secure side-release buckle or a safety buckle that does not open under lateral pressure is important when the collar is also serving as your dog’s tracking device. Avoid collars with lightweight plastic buckles that have a history of popping open under stress — this is a concern on any collar, but more so when it carries tracking equipment.
Best Collar Materials for AirTag Use
PVC-coated webbing — best overall
PVC-coated webbing (the same material used in BioThane-style collars) is the best material for AirTag use. It does not absorb water, maintains its shape and stiffness in wet conditions, does not stretch or soften over time, and holds the AirTag holder in place reliably. It is also odour-proof — wet nylon develops a smell within weeks; coated webbing never does. For dogs that swim, play in mud, or live in wet climates, coated webbing is significantly more practical than any fabric alternative. See our full breakdown in the dog collar material guide.
Leather — good but requires maintenance
Quality leather is durable and holds its shape reasonably well when properly maintained. The limitation for AirTag use is that leather softens when wet and can stretch slightly with repeated soaking — which affects how snugly the holder sits. Leather also requires conditioning to stay supple, and a neglected leather collar becomes brittle. For dogs that rarely get wet, leather is a reasonable choice. For active dogs in varied weather, it requires more maintenance than coated webbing. Full comparison in our BioThane vs leather guide.
Nylon — least suitable
Nylon absorbs water readily, which causes it to stiffen when soaking wet, soften as it dries, and develop odour within a few weeks of regular outdoor use. Wet nylon also provides a less stable surface for an AirTag holder loop than a smooth coated collar. For a collar that will carry an AirTag through wet walks and swims, nylon is the least reliable option. Its main advantage is price — but for a collar that doubles as a tracking device, durability is worth the extra investment.
Choosing an AirTag Holder for a Dog Collar
The AirTag holder is a separate purchase — Apple does not sell a dog-specific holder. The main options available:
Silicone loop holder
A silicone loop that slides over the collar and holds the AirTag in a circular case. Lightweight, flexible, and water-resistant. The main consideration is that it needs to fit the collar width snugly — a 25mm collar needs a holder designed for 25mm. Too loose and the holder slides; too tight and it is difficult to reposition after washing. Silicone holders are the most common and most affordable option.
Aluminium or stainless steel case
A metal case that clips or loops onto the collar D-ring. More durable than silicone and provides better protection for the AirTag in rough terrain. The added weight is noticeable on very small dogs — for toy breeds, a lightweight silicone holder is a better fit. For medium and large dogs, a metal case is worth considering for the extra protection it offers.
Collar with integrated AirTag slot
Some collars are designed with a built-in slot that holds the AirTag directly in the collar material. These eliminate the separate holder entirely and keep a lower profile, which is useful for dogs that snag accessories on fencing or undergrowth. The limitation is that the AirTag is not removable without replacing the collar, which is inconvenient for battery changes (the AirTag battery lasts approximately one year). A separate holder allows easier access.
Fitting the Collar Correctly When Using an AirTag
An AirTag on a collar that comes off is useless. Collar fit is always important, but it is worth re-checking when adding any holder or tag that adds weight or bulk.
The two-finger rule applies: slide two fingers underneath the collar at the back of the neck. You should feel light resistance — snug enough that the collar cannot be pulled forward over the dog’s ears, loose enough that the fingers slide through without forcing. With an AirTag holder added, recheck this — some holders add enough bulk that the effective fit changes slightly.
For a full sizing guide before buying, our dog collar size guide covers neck measurement and the full size chart. If you are also considering a harness alongside the collar for walks, our collar vs harness guide covers when to use each.
A Waterproof Collar Built to Hold More Than Just a Leash
The MoonianPet Waterproof Dog Collar is made from PVC-coated webbing — 100% waterproof, odour-proof, and dimensionally stable in wet conditions. The flat 25mm band holds an AirTag loop holder securely without sliding, and the zinc alloy D-ring provides a stable attachment point for both the leash and any additional tags or holders. Available in 11 colors and 5 sizes from XS to XL.
For a fully matched waterproof setup, the Collar & Leash Set pairs the collar with a PVC-coated leash in the same color — odour-proof, easy to wipe clean, and built for dogs that spend time in water.
Frequently Asked Questions
Is an AirTag safe for dogs to wear on their collar?
Yes — the AirTag itself is small and lightweight (about 11g) and causes no discomfort when housed in a collar holder. The main safety consideration is that the holder is securely attached and cannot be chewed off, which matters for dogs that mouth their collar or play with other dogs. A silicone holder that sits flush against the collar band is harder to grab than one that protrudes significantly.
Can an AirTag be used to track a dog in real time?
Not in real time. An AirTag updates location when it comes within Bluetooth range of any Apple device connected to the Find My network. In populated areas, this happens frequently — often every few minutes. In rural or remote areas with fewer Apple devices around, updates may be less frequent. For real-time continuous tracking, a dedicated GPS collar tracker is the more suitable tool.
Will an AirTag survive if my dog swims?
The AirTag is rated IP67 — water resistant to one metre for up to thirty minutes — so swimming is not a problem for the device itself. The holder needs to be equally water resistant; silicone and aluminium holders both handle submersion well. The collar itself should be waterproof too — a wet nylon collar that stretches and softens will hold the holder less securely than when dry. A PVC-coated waterproof collar maintains its shape and grip in wet conditions. For more on waterproof collars specifically, see our guide on the best dog collar for swimming.
What width collar do I need for an AirTag holder?
Most AirTag loop holders are designed for 25mm (1 inch) wide collars, which is the standard width for medium and large dog collars. For small dogs on narrower collars, check the holder specifications before buying — some holders are available in 20mm versions for smaller breeds. The MoonianPet collar is 25mm wide across all sizes, compatible with the most commonly available AirTag holders.
How long does an AirTag battery last on a dog collar?
Approximately one year under normal use, though this varies depending on how frequently the AirTag is pinged by nearby devices. The battery is a standard CR2032 coin cell, widely available and easy to replace. You do not need to buy a new AirTag when the battery runs out — twist open the back, replace the battery, and it continues working. This is one reason to choose a separate holder over a collar with an integrated AirTag slot — the battery is much easier to access.
Choosing between collar materials for active or outdoor dogs? Our dog collar material guide covers nylon, leather, and coated webbing side by side. Or if your dog swims regularly, see our guide to the best waterproof collar for swimming dogs.
About the Author
Wenyue
Wenyue is the founder of MoonianPet and writes about dog collars, harnesses, waterproof pet gear, and everyday dog care.
Growing up with dogs inspired her lifelong interest in pet care and practical dog gear. Through MoonianPet, she researches dog collars, harnesses, waterproof materials, and everyday solutions that help active dogs stay comfortable during daily adventures.