You’ve probably seen posters advertising microchipping when you take your pet to the vets, but how much do you really know about it? Lots of owners still don’t have their pets microchipped, and when asked, many say that they just don’t know enough about it to make that decision for their pet. Nevertheless, pet microchipping does remain one of the most effective ways of attaching identification information to your pet, increasing the likelihood that they will be reunited with you in the event that you become separated. Here’s what you need to know about how pet microchips work and why your pet should have one.