A Porcupine Visitation

This afternoon, I started backing out my car when I saw a porcupine! Apparently he was either under or by my little car because he was both surprised and frightened. He scampered a few feet away before pausing to consider which way to flee. I held my breath because my big puppy was feet away in the back yard. Luckily it decided the back yard wasn't the way to go. He scampered over to a large live oak tree and climbed up to a limb about 20 feet off the ground. I put a live trap out at my neighbor's urging. The little thing was cute, but could send a dog to the vet. What does a person do with a trapped yet very much alive porcupine? Honestly, while I don't want it to hurt my dog, I don't really want to find myself having to answer that question.