If you have a dog or a cat have it microchip. A coller or tag can fall or be taken off. All 4 of my cats have microchip. I had a chip put in my cat Thomas it cost me $38.00. In Sarasota, FL a kitten got out of the home. 8 years later the kitten was found by the SPCA in San Francisco, CA. If your lost pet shows up at a vet of animal services. They will scann the chip and help get your pet home. Be sure to up date your info with the chip service when you move.