Having brushed off your concerns, you get right into it. You've taken one or two girls before, but while your relationships were fun and you parted on good terms, they weren't meant to last. Point is, you know what you're doing -- and you exalt in that heady feeling of male passion.
Sure, this whole "fuck a werefox's sheath" thing is pretty weird, but there was no backing out now. Not that you want to. Your head -- both your heads -- are ablaze with the image of furry perfection you are going to create. What's a little weirdness compared to that? The boobs justify the means, or whatever that Italian had said.
Man, the fox's fur really is soft. Beyond the excitement in your loins, you find yourself enjoying stroking your hands down his back. His eyes, too, were amazing -- golden and vivacious, sparkling like diamonds in the firelight.
"You really are beautiful -- hrn-- you know," you compliment while you get your rhythm going.
"Why -- thank you," the todd responds, grinning as he thrusts back. "I wasn't expecting such a silver tongue on a human."
"You want to see a silver tongue?" You reach up, tilting his muzzle down so that your lips can reach his. While he's startled at your assertiveness, he doesn't resist, and you lick and nibble at each other's lips. He's a really good kisser, and seems to appreciate your technique as well, and soon you feel a whole new wave of lust sweep over you.
"Oh, baby," you groan as your lips part, licking at the traces of his salive. "Let's do this!"
Tired of the awkward position, you push him down to the floor. He also seems to accept this, impressed by your confidence. So far you haven't noticed much change, but now with a better angle you can apply more force, and you feel your dick pushing his back. Pushing it down.
"Oh. Ohhhh..." Fierce exhilaration rushes to your head as you hear the fox's voice rise in an increasingly female moan. You feel your penis swelling -- mostly at the base -- but in the heat of your rut you just accept this as proof of your masculinity.
"Such a -- strong boy," he pants. "Nnnngh... oh... yes... heehee... I can feel you..."
"Of course you can," you growl possessively as your pubic hair softens into fur, spreading out from your now fully vulpine shaft, your balls expanding as his shrink. "I'm fucking you like a bitch -- like the vixen you were meant to be!"
She -- well, still he, but not for much longer given how deep you're sinking -- nips playfully at you. "Vixen yes, bitch no. We're foxes, not mutts." She runs her hands down your back, yet you don't really register either her words or the feeling of her claws in your fur as you feel her sheath finally giving way, her cock parting from it as it reforms into a clitoris, her balls receding up the channel behind what is now a sheath for your sword.
"Ohhhhhhh..." She takes one hand from your increasingly defined back to fondle her breasts as they begin to bloom from her torso, three pairs, decreasing in size but all plump and shapely. You also pause, hilting yourself inside to remind her of your dominance, while you also explore those enticing mounds. So intoxicating is your lust that you do not notice the muzzle pushing out into your vision, or even register that your hand isn't supposed to be gloved in black fur.
"Yes," you growl, squeezing her second right breast, relishing how wanton the extra tits make her look under you. "All mine, to fuck... to brrreed..."
"Then fuck me, you gorgeous beast!" she cries breathily, clenching her vagina around your cock to encourage you to resume. "Claim your mate!" She curls her legs around your rear, to give her some leverage in pushing you past her lips.
Little enough encouragement do you need. Practically ignoring the slender female legs around you -- save to savour the proof of her desire for you -- you pound into her like the male fox you've become. Until suddenly, her lips and your knot swell and you cannot pull out; and trying to do so drives you both over the edge, you erupting as her insides tremble around you,
Both of you scream in vulpine ecstasy. Your more sensitive ears twitch, but you still don't register that your yowls and barks of victory aren't humans. Finally you rest atop her, enjoying her lithe body and its trove of breasts as they shudder beneath you.
"Not what I was expecting," she says finally, her voice warm with afterglow while you continue to catch your breath after your conquest. "I underestimated you, thought I would be the one claiming a vixen. But I don't mind, after all, being mate to such a handsome and powerful todd."
"...What?" As you come down from your peak, her words finally start to sink in. But it isn't until you go to pull out from her, and can't, that the reality of your changed body crashes over you. With a startled yip, you sit up, your white-tipped brush sweeping across the floor behind you. "What the hell!?" You stare at your hands, at the contrast between their black fur and the white on your chest as you feel over it.
Your muscular chest, you notice, with a certain flush of pride. While your frame is no wider, your body is trim and very well-defined beneath your new fur coat. When you came out into the woods, you hoped to get in even better shape, but didn't expect it to happen this fast.