It's the first Sunday of the month. Knowing that means it's bitch day; I get up and get ready for when He gets up.

Slowly and quietly, I creep out of the room and down the hall to the bathroom. Once my normal morning rituals are complete; I head downstairs and start putting what I can of my gear on for the day.

First is my leather collar. Soft but thick brown leather with custom engravings on it that say “Daddy's Bitch”. It has two metal D rings in it and the buckle locks so you have to have the key to unlock it. I quickly slide it on and tighten it till it's comfortable on my neck and then lock it.

Next is the lube and vibrating dog tail He got me. We'd slowly trained my ass for months to be able to take it. The plug is six inches long and about a little thicker than a banana. The tail portion is a beautiful black fox tail that I love. This was the first time I was using this, so I am curious how it'll feel when he turns it on later. Just imagining it has my cunt starting to get wet.

I take a few moments to stroke and admire the tail portion before finally moving on. Thankfully I'd had the foresight to put the lube bottle in some blankets so when I poured some onto my fingers it was nice and warm. For the next few moments I enjoy myself and finger my ass. I whine a little as I feel my ass stretching around my fingers as I pump them inside of me. The warm lube made my fingers slide easily inside my ass.

Before I could keep going and maybe get to have a small orgasm before the day started though I heard Him getting up upstairs. Quickly I grab my tail and lube it up, and then slowly slide it into my ass. I whimper again as I feel it stretching my ass much more than my fingers did, and going much deeper. Finally after taking it out one more time to relube it; I manage to slide it fully in. Once I do I just stand there and breathe; trying to adjust to having something that thick and long in my ass suddenly.

Soon I'm able to put the lube away and head over to kneel at the bottom of the stairs to wait for Him. Walking over I start to pant slightly as I feel the plug shift inside of me with each step. Kneeling down makes it worse as I feel it even more so when I do that. For the next few minutes I just try to keep focused and in my proper position as I wait for Him.

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Standing at the top of the stairs; I wait a few minutes before heading down. Let her squirm with her new tail in while trying to keep in her proper position. While I wait I think about our agreement. One day a month we take our shared pet play kink further than what she would normally take it. Not that she wasn't into the majority of it or that I was ignoring her limits for the day. More that for today at least she'd do the parts that she's not into but weren't against as long as it's not a constant/main part of our dynamic.

Today she'd be getting walked naked outside in our property when she had to use the bathroom (barring it being number 2 of course). I chuckle to myself as I think that last part before continuing. For meals she'd be eating out of a bowl, and of course she could only walk like a bitch. On all fours. Not to mention the other more normal kinky parts I had planned.

Figuring she'd waited long enough; I head downstairs with the arm and leg binders in my right hand. As I walk down I grin as I see her fidgeting. Seems she's enjoying her new tail from the way she's panting and her cunt is starting to drip. “Good Girl. Now raise your arms so we can officially turn you into a bitch for the day”.

“Yes Daddy” she responds and quickly she raises her arms up while keeping them bent. I grin as I bind her arms, and check that they're secure but not cutting off circulation. Black leather with buckles and straps on it to keep her arms tied to themselves, and pads on the elbows to allow her to walk like a bitch without damaging her body.

“Now your legs”. I watch as she gets down onto the pads and then raises the leg closest to me to be bound, and then the other one once the first is bound. Once that's done I walk around her and enjoy the view of my thick wife bound up and forced to walk on all fours with a tail in. Her large double d tits hang between her arms with her light pink nipples hard, and her large white ass jiggles as she shifts around.

“You excited to be Daddy's Bitch today?” I stay behind her and wait to see if she'll slip up. Will she get a punishment or a reward first today?

“Arf! Arf!” She barks and shakes her ass at me as she looks back. She grins a little as she knows she didn't fall for my trap.

“Good Girl. Though let's show you're really happy hm?” with that said I take the remote out of my pocket and press both buttons. One turns on the tail and starts it wagging like a real dog would when it's happy. The other button though turns the vibe on to it's first setting, and I grin while I get hard as I hear her moan in pleasure.

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I shake and moan as I feel my tail wag, and the vibe portion turn on inside my ass. I thought I'd been clever catching Daddy's trick but I almost failed just now when I almost swore in pleasure. On Bitch day I'm not allowed to talk; only bark like a dog. Thankfully I manage to keep it to just moans but it's hard. He knows I love it in the ass and this vibe is a lot stronger than previous ones we've used. What's worse is I know it's on a low setting as there's no way he'd let me cum this early.

Just as I have that thought He turns it off before I can cum. I whine a little and look back at him but he just grins at me. “To your bowls Bitch, time for breakfast then your walk” he says and heads over to reheat the breakfast I'd prepared the night before. I crawl over to my bowls and lap up some water as best I can while I wait for Him to bring me food. Soon He brings it over and puts it in my bowl and then sets it in front of me.

I blush as I realize he's cummed on my food and is watching me as I lean down to it. My cunt keeps dripping down my thighs as I start to eat. I can't help but be turned on by how humiliated I am by this. Being made to eat this cum covered breakfast out of a bowl while naked and he watches me.

Once we're finished with breakfast and I get another drink he hooks a leash onto my collar and leads me outside to walk me around our yard. Thankfully we're out in the country and the house is back off the road in the woods so no one can see me like this. Though just imaging that happening makes a fresh wave leak out of my cunt as He walks me along.

After we walk long enough that I feel the need to go I stop. I blush again as He turns and grins at me as I spread my legs and pee like a real Bitch would. “Good Girl” he tells me once I'm done before we head back to the house.

Once inside he takes me into the living room and moves the carpet to the side to reveal the d ring mounted to the floor. Then he hooks my collar to it so I'm forced to stay there with my ass up and face to the floor. I wriggle a little as I wonder what he'll do for today. Last time he fucked my cunt multiple times and left His cum leaking out of me while he left me here to await the next time he used me, took another walk, or for lunch/dinner. Soon I hear Him come back and stop behind me.

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Stopping behind her I admire the way she looks again. That thick ass and thighs with her tail in make my cock throb as I run my eyes over her body. Soon. Soon I'll fuck her, but not till she's a complete mess.

I grin as I kneel down and set up the sex machine behind her. Once it's secre to the floor I attach the werewolf dildo I got off etsy to it. The dildo is 10 inches long and as thick as a soda can. It also has a tube going through it for fake cum to pump out of it. When I'm done setting it up I turn and start groping her ass.

She quickly starts moaning as I knead and grope her ass while occasionally running my thumbs on the outside of her cunt. Soon she's pushing her ass back as far as she can; silently begging for more. Instead I smack her ass hard leaving a red handprint on her white ass as she yelps.

“Time for you to earn your keep Bitch. You're gonna be bred so you can pump out a litter like a proper Bitch does”

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B-bred!? Daddy's gonna breed me? Gonna knock me up and have me pump out his kids!? Instantly I'm soaked; my cunt gushing. It gets even worse when Daddy stands up and turns on my tail so it wags and vibrates inside me. With how turned on I am; as soon as he does I cum and suirt on the floor. I hear him laugh behind me and say “Filthy Bitch. That turned you on that much huh? Good. Then you shouldn't have any issues taking your studs cock”.

I feel slightly confused for a moment when he says that. What stud? Is it not Daddy breeding me? Then I feel a head against my cunt that slowly pushes inside. I whine as I feel it push inside me. It's one of those monster cocks I'd been fantasizing about. It's huge. Between it and my plug I feel stuffed full but it keeps pushing inside me till it hits my cervix.

My eyes roll back as I cum hard again from being stuffed so full. Not that I'm given any chance to adjust before Daddy turns up the speed I'm being fucked. Soon that thick cock is pounding into my cunt and hitting me deep inside repeatedly. I scream and cum repeatedly as I'm fucked and Daddy cycles through the different vibe levels. I'm shaking and feel light headed from all the orgasms but Daddy doesn't let up.

Every once in awhile the monster cock fucking me pumps a load into my cunt that it fucks back out of me. That repeats for God knows how long. Eventually Daddy removes the toys out of my ass and cunt as I lay there in a heap having been overwhelmed by the intensity and amount of orgasms I had. I had been well and truly fucked like a Bitch in heat trying to be bred.

But it wasn't over just yet. Even though I was almost delirious from the pleasure I still recognized when Daddy put his cock to my ass. I whined and pushed back against him; always willing to take his cock. Soon he was balls deep inside my ass and pounding away. I screamed and moaned again in pleasure as he took my ass with no mercy. Soon I felt a real load of cum shoot deep inside me and finally cummed one last time and before passing out with Daddy still inside me. Drifting off I heard Him say “Good Girl. That's my Bitch”