What to engrave
Your phone number. That is the one line that has to be there, and it should be first. A mobile number, not a landline you are not standing next to.
A second number.The AKC makes the same point about microchip registration — put more than one contact on it, because the person who finds your dog will call once and give up. A partner, a housemate, anyone who would answer.
Anything medically urgent.“Needs medication” or “diabetic” changes how quickly a finder acts. This is one of the few genuine reasons to want more lines on a tag.
What to leave off: the dog’s name. It mostly helps a stranger call your dog away from you, and a dog that responds to its name from a stranger is easier to take. Your home address is also worth thinking twice about — it tells whoever has your dog exactly which house is currently out looking for it.
Slide-on beats hanging, for most dogs
| Slide-on | Hanging |
|---|
| Noise | Silent | Jingles constantly |
| Snag risk | Flat — nothing to catch | Can catch on crate bars and fences |
| Falling off | Only if the collar comes off | Split rings work open over time |
| Text capacity | One face, fewer lines | Two faces, up to 8 lines |
| Swapping collars | Must be unthreaded | Clips across in seconds |
The split ring is the part everybody underestimates. It is the same design as a keyring, it works itself open against fabric over months, and the tag is then lying in a field. If you use a hanging tag, use a proper S-hook or a solid ring rather than the split ring that comes in the packet, and check it every few weeks.
Material: stainless, not aluminum
Anodized aluminum tags are cheap, come in colors, and go unreadable within a year of a dog living a normal life — the colored layer wears through and the engraving with it. Stainless steel is a couple of dollars more and still legible when the dog is twelve.
Laser engraving rather than stamping matters for the same reason: laser engraving is cut into the surface, stamping deforms it, and a deformed surface polishes flat against a collar. Brass is a reasonable middle ground but tarnishes.
QR and NFC tags: what they actually add
A QR tag stores a link to an online profile you control, so you can change the phone number without buying a new tag. That is a genuine advantage for anyone who moves, changes numbers, or fosters.
The catch is a dependency chain: the finder needs a smartphone, a signal, and the willingness to scan an unknown code. A printed number needs none of those. The right configuration is both — a QR tag alongside an engraved number, or an engraved number on the back of the QR tag. Do not let a QR code be the only thing on the collar.
Also check the subscription position before buying. The tags we have picked state a one-time purchase with no recurring fee; some competing products quietly require a paid plan to keep the profile live, which is a lost dog waiting for a lapsed credit card.
Tags on harnesses
If your dog walks on a harness and only wears a collar sometimes, the tag is on the wrong equipment. A silicone-banded slide-on tag grips a harness strap as well as a collar, which solves it — that is what the PAWNIMALS pick is for.
The alternative is to keep a permanently worn collar carrying the tag and use the harness only for the leash, which is what most households end up doing. See harness vs collar for the wider question.
Check the tag when you check the harness
Tags wear. The engraving on the face that rubs against the collar goes first, and by the time you notice, it has been unreadable for months. Read your dog’s tag out loud once a month, as part of the same routine as checking the harness for wear. If you cannot read it at arm’s length in normal light, a stranger in a hurry cannot either.
What we would actually buy
For most dogs: the GoTags slide-on, in the width that matches the collar, with a mobile number and a second contact. For a dog whose situation changes, or a foster: the WhoseID QR tag alongside an engraved tag, not instead of one. For a dog that lives in a harness: the PAWNIMALS silicone slide-on. And get the microchip registered while you are at it — the tag and the chip solve different halves of the same problem.
