A microchip is not a guarantee that your lost pet will return home, but it significantly increases the chances of reuniting with your companion. Even if your pet doesn't run away, unexpected disasters can occur that may leave you separated.
Hurricane Katrina taught us a lot about the importance of permanent identification: the Louisiana SCPA reported that of the 15,000 rescued pets (not including the tens of thousands unaccounted for), only 15-20% made it back to their families.
The absolute best thing you can do to increase your pet's chances of returning home is have a collar with tags that display your cell phone number and home address. However, collars can be lost or removed, so we recommend a microchip as another means of identification.
Microchip Questions & Concerns
I want my pet to be microchipped. What's next?