TomHobbes:
may I ask for a moratorium on people growling or hissing as they speak to one another in our stories?
Only if you agree to also outlaw the dull word "said". Myself, I get tired of "said", (even when I'm in the process of overusing it). Almost any alternative might be better if it helps develop a character, show emotion, show intent, or illuminate action; yelled, squealed, whimpered, whined, whispered, shouted
growled, hissed, squeaked, breathed, ordered, asked, barked, croaked, screeched. I'll bet somewhere on the Internet we could find a list a mile long. I see nothing wrong with any of these speech descriptions.