Identification · July 6, 2026 · 7 min read

RUAC Mexico City: what it records and when to update it

RUAC does not replace an ID tag or microchip. It is another part of identification and a useful reminder that stale details do little when an animal goes missing.

Dog with an ID tag while a guardian records information on a computer.

The Single Registry of Companion Animals holds information about dogs and cats living in Mexico City. It links the animal with a guardian and keeps details that may help with identification. Registration is free, but families should use the official portal and provide accurate information.

Quick guide: RUAC Mexico City: what it records and when to update it
	Identity	Register only through the official Mexico City portal.

RUAC Mexico City: what it records and when to update it

Registration works best as one layer of identification

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