She dropped to her knees the second the door shut, already panting like the bitch she wanted to be. "Woof," she said, voice low and hoarse, eyes locked on my belt. I didn't say a word. Just unbuckled, pulled my cock out, and let her crawl forward on hands and knees until her lips brushed the head.
"Good girl," I muttered, grabbing her hair. She barked again, louder this time, a sharp, eager sound that made her whole body jerk. Her tongue came out flat and wet, licking up the underside like she was desperate for it. No teasing, no slow build. She opened wide and took me straight to the back of her throat on the first try, gagging once before she settled into a steady, sloppy rhythm.
I fucked her mouth hard, hips snapping forward while she stayed on all fours, ass up, knees spread. Every time I pulled back she barked, short and frantic, spit dripping down her chin onto the floor. Her tits swung under her, nipples stiff, and I could see the wet spot already spreading on her panties. She was soaked just from sucking and barking.
"Turn around," I told her. She spun without standing up, presenting her ass. I yanked the panties down to her knees and slapped her cunt once, hard. She yelped, then barked again, pushing back against my hand. Two fingers went in easy. She was dripping, hot and tight, clenching around me while she kept making those raw little dog sounds.
I lined up and drove my cock into her in one thrust.

She howled, then broke into a string of quick, desperate barks as I started pounding. Her pussy gripped me wet and slick, taking every inch while her knees slid on the hardwood. I reached under and grabbed her tits, squeezing hard, pinching the nipples until she barked louder, voice cracking.
"More," she gasped between barks. "Fuck me like a stray." So I did. I pulled out, flipped her onto her back, and shoved back in with her legs over my shoulders. Her cunt was red and swollen, lips spread wide around my shaft. Every thrust made a filthy wet sound. She barked on every stroke now, high and broken, eyes rolled back, mouth open and drooling.
I pressed my thumb against her clit and rubbed fast. She came hard, whole body shaking, barking turning into a long, ragged whine that faded into panting. Her pussy pulsed around me, squeezing tight, but I didn't stop. I kept fucking her through it, chasing my own finish while she lay there twitching and whimpering like a well-used pet.
When I was close I pulled out and stroked twice. Thick ropes landed across her tits and stomach. She licked her lips, then leaned up and cleaned the head of my cock with slow, thorough swipes of her tongue, still making soft little bark sounds between licks.
She stayed on the floor afterward, curled on her side, cum cooling on her skin, breathing heavy. I sat on the couch and watched her. Every few minutes she gave another quiet bark, almost to herself, like she couldn't quite turn it off. Her hand drifted between her legs and she started rubbing again, slow and lazy, already working herself back up.
"Stay," I said. She froze, then settled with a soft whine, fingers still moving but slower now. We both knew the night was far from over. She was just getting started on being the filthy, barking slut she needed to be.