I adopted my dog from an animal shelter in my area. They chip all their adoptees. I was out in the park with CoCo playing fetch. She ran into the street and was hit by a truck. She wouldn't come to me and I lossed sight of her. The vet says they are sometimes crazed by the pain. I went home, crying all the way. There was already a message from the registry with a phone number where I could call. Long story short she is fine. There is absolutly nothing better than these chips!