Short answer: yes to both if you can. A chip identifies your dog for life. A tag lets anyone who finds your dog reach you quickly.
How a chip works
The AKC says a microchip is a tiny radio-frequency transponder, roughly the size of a grain of rice, with a unique number. When a vet or shelter scans it, the number links to the owner's details in a database. Tags can fall off or become hard to read, while a chip permanently identifies the dog.
Keep details current
The RSPCA says a chip only works if your details are up to date. If you move or change your phone number, tell the database. Chipping rules differ by state and city, so check where you live.
Use a tag as well
A tag on a collar helps someone call you right away. See bolting out the door and emergency recall.
Get the right help
Ask your vet about chipping and how to update your details.
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Sources
Sources & care notes
Frequently asked questions
Is a microchip enough on its own?
A chip is permanent ID, but a finder needs a scanner. A tag lets anyone who finds your dog call you right away.
What if I move or change my number?
Update the database. A chip only works if the details behind it are current.
Is chipping required by law?
Rules differ by place. Check what applies where you live and ask your vet about chipping.
My dog has a tag. Still chip?
Tags can fall off or become hard to read. A chip covers that gap, so many owners use both.
