How do I choose which registry to register my pet's microchip with?

Registering with any legitimate registry beats not registering at all, but a few concrete criteria separate a registry that will still be useful in ten years from one that quietly becomes a dead end.

Does the registry participate in the AAHA Universal Lookup Tool?

This is the single most important question. Vets and shelters start a microchip lookup at the AAHA Universal Microchip Lookup Tool, which only surfaces registries that participate in it.^[1] A registry that isn't listed there is invisible to that first, most common search — the finder's clinic would have to already know to check that specific registry by name, which is a much weaker path back to the owner.

One-time fee or subscription?

Both models are common, but a one-time fee is the safer default for something you're relying on to work correctly a decade from now. Pay once and the record stays valid indefinitely, with nothing to remember. A subscription can bundle in extras like alert networks or ongoing support, but a lapsed payment could mean a lapsed registration — a risk worth weighing for a record meant to outlast the initial sign-up by years.

How easy is it to update your information?

You will move, change your phone number, or get a new email at some point during a pet's life — see why keeping a record current matters. Before registering, check whether updates are self-service (log in, edit, done) or require contacting support and waiting. A registry that makes updates easy is one you'll actually keep current.

Can you transfer the registration if you rehome the pet?

Selling, rehoming, or handing a pet off to a family member all mean the registration needs to move to a new owner eventually. Confirm the registry supports a transfer process before you need it — see how transferring a registration works for what that process typically looks like.

Does the registry work with the brand of chip already in your pet?

Registries generally don't care who manufactured the chip — see registering a chip you didn't buy — but it's worth confirming before assuming, especially with older or less common chip brands. Registration only needs the chip's ID number, not a chip purchased through that specific registry.

Sources

1. Universal Pet Microchip Lookup Tool American Animal Hospital Association