This species of snake will only attack humans if it feels threatened.
2
To aggressively challenge a person, idea, etc., with words (particularly in newspaper headlines, because it typesets into less space than "criticize" or similar).
She published an article attacking the recent pay cuts.
3
To begin to affect; to act upon injuriously or destructively; to begin to decompose or waste.
4
To deal with something in a direct way; to set to work upon.