Fist of all: There is nothing symbolic in the red writing. It's not supposed to be any sort of ill omen. It's just that there wasn't enough room for a speech bubble without getting in the way. Black text didn't stand out enough, white was to hard to read and any other color looked to comical. So.
It might seem wired that Coro is biting Tauner's mouth, but that's nothing unusual in wolf fights.
I feel genuinely sorry about Coro's eye

. But i designed Coro before I made his history, and he was blind in one eye when I made him. I'm gonna miss drawing it...
And WOW! Did you notice the totally awesome background?!! NOT! It looks horrible.