What Is a Teacher???

I taught English composition and developmental reading to students at various universities and junior colleges for years.  I thought, for a spell, that I wanted to complete a Ph.D. and continue to teach until the powers that be were forced to wheel me out of the classroom while near death.  I changed my mind.  Now I work in a veterinary clinic, and help (with the help of many others) to teach pet owners about proper and good animal care.  It might not be appropriate to state that I'm at teacher on any of the numerous profile questionnaires found on any of the numerous sites contained within the behemoth that is the Net, but I feel we all have garnered skills throughout all of our lives that enable each of us to grant each of us the title of "teacher."  We are all students, and we are all learners.  What will you teach me?