Tonight on our run we saw: dozens of birds (lots of cardinals), several rabbits, 2 deer (twice), a woodchuck, a cat and a dog.
Things I would study if I didn't have to hold down a lame job:
Physics (theoretical particle and/or astrophysics)
History and Philosophy of Science (physics and mathematics)
Military History (World War I)
Music (conducting, percussion)
Philosophy (ethics, theory of knowledge)
Geology (temblors, plate tectonics, geomorphology)