We routinely geocache with our dog Millie. Along with the required vaccination tag, I attached one of my military dog tags for identification. At a recent event, a geocacher mistook the military dog tag for a TB and then suggested I should attach a TB to the dog. Seems like a good idea, I could log her in and out of caches and allow people to "grab it" at geocache events. Just trying to avoid pitfalls and see if anyone else has done similar. Thanks in advance.
Harelips