Which genre?

I left the Writer's Conference with the urge to write! An animal rescue and haven is sponsoring a writing competition and fundraiser.  I want to save dogs from a death sentence by entering this contest.  Which genre?  Poetry or Romance? Mystery or SciFi? Suspense or Horror?Teen or Children's?  So fun making decisions!  In the past  I have written about a woman leaving home and living an adventure for three months, a novel about a 13 year old girl who is befriended by a talking squirrel named SQ, a story of a young woman who joined the underground to overthrow an anti feminist totalitarian government.  My coworker writer friend told me to write about the subject that I can't stop talking about!  Well that would be that I feel like a sandwich, tugged this way and that by the people in my life.  Today I worked, zipped by the store to buy some new shoes.  The tread on my old shoes was worn out and walking on water slick surfaces was treacherous.  I found some for $20.  I had a dentist appointment for a cleaning.  Four or so weeks ago, I chomped into some candy which was frozen!  My two back teeth hurt and eventually, part of  a filling fell out when I flossed.  So a new filling was installed, but I haven't felt comfortable inside my teeth.  Though she looked and took xrays, the hygenist could find no crack or other problem.  I suppose that is good news.