Imagine confessing your knotty desires to a human partner. You assure them that you'd never act on it, of course.
That weekend your partner hands you a blindfold and says they have a surprise for you. You put it on and they position you on the bed, butt hanging over the edge, before leaving the room.
They come back quietly. Next to their footsteps, you can hear the clack of claws on the floor and panting breath. You smell the fur and dog scent as they approach. You let out a small whimper when the cold nose touches your ass.
"Oh no, no no..." you mutter as the dog laps at your pussy.
"Shh, it's okay, you're not doing anything..." you partner strokes your hair.
You feel claws dig into your hips and heavy, furry warmth on your back. You whimper and gasp as the wet tip probes for an opening.
The dog's cock hits its mark and sinks in. The thrusting is fast, harsh, and intense. You grit your teeth as you let the sensations rush over you- the slick, rapid thrusting, the bone in the cock occasionally jabbing your walls.
You feel the dog's cock expanding and changing inside of you. More soft flesh at the tip, and a firm swollen knot at the base. The knot slips out and gets pushed back in with each thrust as it grows until... it doesn't go back out. You feel the tug at your opening. You clench around the knot while you feel the fleshy tip pulsate back and forth with each squirt of cum.
"That's a good little dogfucker..." your partner purrs as they rub your ears, " take it all, every drop."
The dog slides off your back and twists to face away from you. You clench, trying desperately to hold it inside, but the knot bursts out. You yelp and sigh feeling slick warmth slide down your thighs.
"so." Your partner asks. "Was it everything you wanted?"