As we all start climbing the stairs, I decide to go a bit slower than everyone else. My mom and sister don't seem to notice, and shuffle into their rooms. I look at the door creaked open to my mother's room and my cock extends out of my sheath. I did enjoy "relieving" my mom's stress and I had no doubt that she wouldn't say "no," so I snuck into her room. She was laying on her bed, naked, on her stomach, watching some silent porn as she stroked herself. Her tail was wagging a little as she switched between sticking her finger in her sheath and rubbing her full length. This didn't phase me at all, as I heard my sister moaning loudly no doubt from one of the many canine styled toys she owned. At least my mom let me sleep.
I tiptoe to the other side of the bed as my mom intently watches her porn, and then I plop down hard and embrace her in a strong hug. My mom jizzes a bit from the sudden shock and I smile as I wipe a bit of cum from her stomach and make her lick my fingers. She and I both know what I want to do, so after a bit of cuddling and kissing she puts herself on her elbows and sticks her furred ass up in the now very fitting doggy style position. Before I do anything, I first put my hands on her now very bubbly ass and push it apart, revealing her normal asshole. I lean in and get a smell of pheremones which instantly makes me hard. As a bit of extra foreplay, I run my hand behind her moist balls, kneading her prostate a little, and tug her ballsack, which gets her to groan sexually. Neither of us notice our body hair becoming thicker nor the variety of sheddings we left on the bed as we prepare ourselves to get it on.
I aim my rocket and fire, going into her delightfully tight anus. She and I moan in pleasure as I penetrate her as deep as I can. At first I can only go halfway, but I manage to go balls deep after persuading her anal muscles with a few hard thrusts. She squirts a bit on the covers as I bottom out, and I reach around to start giving her a handjob as we fuck. Her tail is wagging like crazy now, however it's extended to about a foot and three inches and covered in fur. I barely even mind as I increase my tempo with both my thrusts and pulls. Thrust forward, hand back, pull out, hand forward. Over and over, in opposite directions. It's a state of constant euphoria as we fuck like dogs, nay, wolves and start howling as our pleasure rises. As we howl, we don't even notice our mouths start to push out a little, our noses shrinking a bit and feeling more moist. The neighbors don't seem to pay any mind as they already know we have a very strong family bond. My mom's tits bounce back and forth and eventually she's the first one to cum. My handjob plus fucking her ass made her shiver right before I felt her dick and balls tense up. She released her seed on the underside of her tits as I kept increasing my rythm to frantically reach my own orgasm. All the while, our sleek muzzles continued to push out. They ended in a black tipped nose, whiskers, and some black gums. About half a minute later, I felt my knot bulge and I flipped my mother so that she was stomach side up right before we lock in and I shoot my cum deep inside of her. We just lay there, panting for a bit, until my mom reaches up a hand and strokes my hair. "You were wonderful, honey. We need to do this more often." I respond with a casual "Sure thing" as we proceed to lock muzzles and lick at the insides of each others' mouths. I feel her canines and taste her saliva while she does the same thing to me. We eventually hear a howling from my sister's room as she orgasms, then some clatters as her toys fell on the floor followed by a lazy groan as she stood to pick them up. My mom and I smirked and then I proceeded to lick the cum that she sprayed on the underside of her tits. She simply relaxed into the bed as she let my dextrous tongue lick her peach fuzz covered melons.
After a few minutes, I was done licking her tits and I was still yearning for more of her taste. So I did the only reasonable thing. I stuck my snout into her sheath and started licking her gooey tip in order to coax it out of hiding. My mom just sighed and said "It's Saturday tomorrow so I guess I can go for one more, but afterwards I want to sleep." I simply shrugged and kept licking. It was her cock, it was her choice. I finally got her rod out of hiding and I proceeded to lick it with my large tongue, quickly getting it hard. My mom moaned as she settled in for round two. I put my head over her dick and took her length in my snout, proceeding to lick it from all sides within my mouth. She started bucking her hips to the sensation and forcing more of her length down my throat. I knew she wouldn't last long so I prepared by placing my tongue under the tip of her cock as to funnel the cum down my throat. With a shudder, she released the warm milk that I had come to enjoy. I gulp it down greedily until my mom runs dry, at which point she tells me "Alright we've had our fun, time for lights out." I lick the last bits of cum off her dick and look up to admire her body.
Her face was now canine in structure, with a sleek, wolf muzzle sticking out and ending with a black nose and parted lips. Her ears are at the top of her head in her longer than average fur called hair. My mom's tits are big, about the side of a human head each, and very fun to play with. Her luscious fur runs around her entire body, a light gray color which grew lighter towards her more private areas like her neck, stomach, and groin. Her cock was still somewhat erect at 10 inches, 2 less than her real length. Her balls were now larger than eggs, more like tomatoes. I grab them one more time and move them around in my hand, noticing how they push back when I squeeze. Her ass was big, like two hemispheres with a 9 inch radius each. Her legs were toned and digitigrade, something I nor she noticed and still don't notice after fucking like animals. Finally, her feet ended in large paws, stretched out to resemble a human foot but for an animal. Of course this is still all normal. My mom is exactly how I remember her, a 6' 5" anthropomorphic wolf fucking machine.
I reach to turn the bedstand light off and both she and I lay in for the night, hugging each other with my boner still lodged in her ass. I push my face into her pillows and gently nibble on a nipple before drifting off into sleep inside of her cavity. When I wake up, I find that...