My first time was with a big mixed-breed mutt I’d adopted about ten years ago he was maybe part Lab, part something hefty, with this gentle but strong energy. I’d been curious for a while, those little thoughts building up, and one night it just happened. We were alone, I was relaxed on the couch, and he climbed up, nudging me like he knew what I was thinking. I’d read enough to know the basics positioning, all that so I got on my knees, pulled a blanket under me, and let him figure it out. The lead-up was all nerves and heat, my heart racing with this mix of “oh shit, this is it” and pure anticipation.
When he finally mounted me, the first thing I felt was his weight warm, solid, pressing down like a heavy blanket, but alive and moving. His front legs gripped my hips, claws digging in just enough to leave little red lines (nothing permanent, just a sting). Then came the real moment—he found his mark, and that first thrust was this wild shock. It’s not like anything human his cock was hot, slick, and tapered, sliding in fast and deep with this urgent rhythm. I remember gasping, not from pain but from how different it was—sharp, intense, like my body had to catch up to the sensation. There’s this stretch, not huge but noticeable, and a wet heat that fills you quick because they don’t ease in; they just go.
The knot was the game-changer. I’d seen it in videos too, but feeling it swell inside me was insane. It starts small, then grows—firm, round, pressing against every nerve in there. For me, it locked in after a minute or so, and that’s when I felt this full, pulsing stretch that made my legs shake. It’s not comfy at first—more like a tight, overwhelming pressure but then it shifts into this deep, thrumming pleasure that’s hard to describe. I could feel him twitching, pumping, and that warmth spreading inside, like a flood you can’t ignore. My mutt was panting over my shoulder, drooling a bit on my back, and I was just lost in it sweaty, trembling, moaning without even meaning to. Emotionally, it was a rollercoaster. There’s this primal rush, like you’re tapped into something raw and ancient, mixed with a weird tenderness because he trusted me enough to do this. Physically, it’s fast maybe 5-10 minutes total but intense as hell. After the knot tied us, we stayed locked for another 10 or 15, and I just breathed through it, feeling him soften and slip out eventually. I was sore after, a dull ache in my hips and a little raw down there, but nothing bad more like a workout buzz. I collapsed on the blanket, he licked my face, and I just laughed, thinking, “Holy fuck, I did that.”