Tell the ultimate bio-weapon to stop licking you.
— Ervoth von Lucifuge, Starslip Crisis
I think they are deadly poisonous Zanzibar hamsters.
Suffer the little creatures, for they may yet rise up and beat you senseless.
"Pathetic? He's Hitler with a tail! This is the Omen with whiskers! Nostradamus didn't see this thing coming!"
— Ernie, MouseHunt
"What kind of mocking God created creatures with poofy ears and big black noses that don't want belly rubs?"
Gabe: Don't just run over there and attack it. We should check him out first.
Gailgwynnych: It's a rabbit. Look how big I am. I'm huge. Plus, I've got this sword. I think I can handle a fucking rodent, you pussy.
Gailgwynnych: What are you doing? Help me! Cast a spell or something! HE IS THE RUINER OF WORLDS!
Kara: Did you help him?
Gabe: No. It turns out it was the king of all rabbits, indeed of all rabbit-kind. Their lord. The single template from which all other rabbits were wrought.
"Attention! Attention! Ladies and gentlemen, attention! There is a herd of killer rabbits headed this way and we desperately need your help!"
— Officer Lopez, Night of the Lepus
"Cuddly widdle bears of death!?"
—Tabitha Smith, Nextwave
Clarkson: That is a, um, rabbit. I think it's going to attack me, look, it's poised.
[camera focuses on a hare frozen and wide-eyed with terror]
May: It's very tame.
Clarkson: It isn't tame, it's never seen a Lancia Beta coupe before and it's stunned.
May: [deadpan] To be honest, I was pretty scared when I saw it. Why doesn't it just run off?
Clarkson: What if it leaps up and bites my throat out?
May: I'll laugh.
— Top Gear goes to Africa and is slightly disappointed by the quality of the wildlife encounters.
"I think I made the fish too hardcore."
—Toady One, Dwarf Fortress
"They got big furry tails, long and droopy ears like a dog, and their face finishes the rest of their cuteness. Of course these cute factors run away when you start to see them slaughter your team with powerful magic spells if you find them as enemies."
— Troper describing the Nu Mou.
"Haymitch had his own troubles over in the woods, where the fluffy golden squirrels turned out to be carnivorous and attacked in packs, and the butterfly stings brought agony if not death."
— Katniss Everdeen, Catching Fire
The platypus is mother nature's way of saying, "I made this thing out of spare parts I found on the workshop floor, and it can still fucking cripple you."
"It's surprising how well cute and vicious go together."
"You should have hacked it to pieces when it was still adorable!"
— Marceline, after the Dimple Plant becomes a giant mutated monster, Adventure Time
Godhound: Do not attempt to run, little morsel! We are Godhounds and we can smell fear!
Godhound: Oh! It's me!
Here the author inserts an explanation. Most people think of rabbits as cute peaceful creatures— unless they have read Watership Down.
DOMESTIC rabbits may be that way, but wild rabbits can be quite belligerent, fight ruthlessly, and are pretty tough for something on their link of the food chain.
And Nabiki, who would normally stay back and say that it's not her problem, was at the moment in full blown berserk wild rabbit mode.
Ranma: "Oh, I've always liked rabbits. Tough critters in the wild, you know, real fighters. Besides, dogs are too much trouble, compared to rabbits."
— Paragon, Chapter #2
Amusingly enough, I once had a game where I had a rating 5 familiar listed on my sheet. When the other players asked what it was, I didn't tell them. When they saw that I carried a hamster with me, they laughed, and thought my Familiar was something else...
Well, right up until they saw the hamster rip an ocean dragon to shreds.
— Poster Nocte ex Mortis, this thread