Here's something most cat owners don't realize until it's too late: that microchip implanted in your pet? It won't help anyone find you unless you've actually registered it. And in a growing number of states, you don't get to choose whether to microchip anymore—it's the law.
This guide walks you through everything from state-by-state legal mandates to what happens when two people fight over who actually owns a microchipped pet. If you've been putting off this decision, or if you got your cat chipped years ago but can't remember if you registered it, you'll want to keep reading.
Think of a microchip as a permanent ID bracelet for your cat—except it's invisible, about the size of a single grain of uncooked rice, and goes under their skin. Vets typically inject it between the shoulder blades using a needle that's slightly larger than what's used for vaccinations.
Here's what actually happens when someone finds your lost cat. Animal control or the vet clinic waves a handheld scanner over your cat's back. The scanner emits radio waves that wake up the dormant chip (there's no battery—it only responds when activated by the scanner). The chip sends back a 15-digit number, kind of like a barcode. That's it. That's all the chip does.
Now here's the part that trips people up: your phone number isn't stored on that chip. Neither is your address. The chip itself holds nothing but that unique number. To turn that number into useful information, wh...