These are great resources!

I don't know if this is the right place, but I wanted to mention that microchips are only as good as the information associated with them. It is so super important to make sure the information associated with the microchip is registered TO YOU!
Last night when I got home from work, there was a big ol' chocolate lab in my yard. He had a microchip tag. I called the toll free number to find that the chip was still registered to the animal shelter. Not only was the shelter closed for the evening, but I volunteer with that shelter and know for a fact that when they were changing computer programs, they somehow lost years worth of adoption records!!!
I have my own cats and foster cats in my house and didn't have a spare room for the dog. I walked him around the neighborhood and finally found someone that knew the dog and where he belonged. Yay for happy endings!
Please don't forget to update the registration of your pet's microchip so there can be many more happy endings.