Open the Door

You take a deep breath, get a firm grip on the metal handle, and turn it until the metallic lock clicks, unlocking the door. Then, with a stern pull, the heavy door swings open. Your pulse steadily quickening, you enter the cell. Your eyes adjust slowly to the darkness around you, yet you can discern no living object(s) in the cell when suddenly. . . .
"Arf!" a high pitched voice says. A tiny puppy comes into view, set off from the darkness.
"Oh!" you sigh. "How cute. Come here, little guy! Here boy." you whistle. "I won't bite, I promise."
The tiny pup approaches you enthusiastically, and leaps into your arms.
"No, no, stop!" you laugh as he playfully licks your face. "Hey, cut it out." You look the brown-eyed, thick furred puppy over. "So, this is the infamous "Gunther", eh? You're not so tough." You shake the tiny ball of fur vigorously, mussing it's hair all over it's face. "Man, you're adorable. I might just steal you away from the Owner and take you home with me. Would you like that, huh boy? I'd keep you in a huge doghouse, not a dank, damp, basement. And i'd feed you raw steak, not those disgusting fish-heads."
"Arf!" the tiny pup barks in joyous approval. And then, it begins licking your face once again.
You close your eyes, and smile satisfactorily as his tongue tickles your nose and cheeks.
Then, the tiny creature rests its head on your shoulder.
"Aw, poor baby. He's gone and tired himself out." you say. "Eh?"
The pup begins nibbling on your ear.
"No, puppy. No, stop!" you protest, playfully at first. "Ow!! Sonova.....That really hurt!" You pull the animal away from your ear.
"Rhaarrr!!!" the animal hisses sharply.
"Aaahh!!" you shout.
The pup opens its mouth, exposing rows of jagged teeth. It moves forward, lashing at you.
You toss the animal across the room, and into a wall.
It lets out a final whimper, and goes deathly still. Then, before your eyes, the animal goes throughg a rapid decomposition, from flesh, to rotting corpse, to bone, all in an instant.
"Oh my . . . . " you gasp. "I think i'm gonna be . . . "
Suddenly, the pile of bones stands up.
" Holy . . . !!" you gasp.
The mass turns to you. "Y'know, that REALLY stung."

"Oh my God, it talks!!"