My boy woke up -- or, rather, woke me up -- with another nosebleed this morning; they're infrequent and (thankfully) not severe. After the expulsion of the rope of snot and pus the other day, I contacted my vet, who prepared a prescription of doxycycline for me to pick up and try next. Any input on that? I imagine once there's an obstruction there (a tumor), it's pretty hard to prevent secondary infections with ANYTHING.