You decide to repay your new found friend. After all, you wouldn't have been able to get your mother anything had it not been for her. She seems to be in heat from what you can tell and is practically begging for it. What was the old saying 'A Colt's best friend'... with benefits?

You set down the gift you got your mother and slowly approach the bed. Seeing your mother completely revealed like this does spike thoughts into your mind about putting it in her, but those thoughts are quickly pushed aside as you look to Lassie as she presents herself to you.

Besides, having sex with your mother? That would be totally wrong. What if she got pregnant?

Basic anatomy however, tells you that no matter how much cum you dump into this horny bitch, she isn't going to have any pups. Her rear wiggles in anticipation as her tail raises up and she presents her glistening pussy to you.

“Come on stud, mount me like you mean it,” she coos you. You take one last look to your mother and wonder if you should be treating her instead, since it's Mother's Day and all, but again push those thoughts aside. You already got her that totally awesome Pretendo.

Crawling up behind the purebred Collie, who is at this point pretty much leaking like a busted water mane, you take a sniff of her aching twat. Her musky scent drives you wild, your equine cock stiffening at full mast as you rear behind her.

Grabbing at her sides with your front hooves, you mount her like a real stallion, jerking forwards as you start to loose yourself with the primal urge to breed her... even if you can't.

Thrusting forwards, you completely miss your mark and merely spread precum all along the dog's flank. Giving another primal thrust you again miss the mark. Lassie whines out a horny note of anticipation as she tightly presses herself against you, your cock slipping between her back and you stomach.

“Here,” your mom says as she crawls beneath the two of you. “Maybe I can help.” You feel her hoof run along your shaft and give it a gentle stroke, making your rear end tense up as a glob of pre dumps onto Lassie's back.

“Oh... oh goddess yes this is gonna be so good,” the dog moans. You feel the tip of you shaft make contact with something soft and wet but something tells you it's not your dog friend's canine pussy.

Soft lips envelope you cock as your mother begins to take your length into her mouth, her tongue lapping around your length as she begins to bob her head. You let out a moan of pleasure as you thrust yourself a little deeper into her throat. 'Maybe I should have chosen her...' you think quietly and all too soon you feel her lips part from you meaty cock which could nearly rival a full grown stallion's.

“I think you're ready now sweetie,” she tells you as she guides you cock to the quivering entrance of Lassie's sodden box. The dog lets out a pant of pleasure as the two of you shiver from contact. It's almost too much to bear and it's all you can do to keep yourself from simply thrusting into this horny pooch and dumping your load in her.

Helping guide you into the dripping cunt, you mother ushers your cock along and you feel the flared tip of your cock spread Lassie's lips wide open, the pooch letting out a pleasured whine as her front legs collapse from the ecstasy she's going through.

Looking down, you watch as inch after meaty inch of your cock disappears into her soaking wet cooch. “Ugh...” you grunt as you feel yourself twitch, precum oozing into her wet hole, her body shuddering beneath you as she feels the hot liquid plastering her insides.

You let out a gasp as you feel her inner muscles contract against you and before you can say a thing, she finally caves to her inner lusts and slams her hips against yours, taking you to the hilt and letting out an orgasmic scream.

Pussy juice seeps out of her tightly filled box and begins to drip down below. “Now pound me like a poodle!” she orders you. You hesitate for a moment at her odd wording for the subject but are quickly brought back to your lustful act as you feel her pussy start to massage your entire length.

Never in a million years would you have thought yourself to be doing this, but damn if it didn't feel amazing. You pull back then gently rock yourself back into her, feeling the slightest bit of resistance from her extreme tightness. A shock wave of pleasure hammers down on your cock as your medial ring pushes itself back into her depths.

You pull back again but this time are shocked when you feel a tongue dancing on your balls, followed by a gentle suckle from a pair of soft lips that nearly make you collapse from the sheer pleasure of it.

Your stomach leans into Lassie's back as you push yourself right to her cervix, your flared cock head nestled comfortably against it before you pull back for another lustful thrust. Through all her lustful moans and cries of pleasure, Lassie finds enough willpower to start thrusting against you, meeting your pushes and slapping your hips together.

Each time your medial ring passes her vaginal lips it sends a shockwave of pleasure through you that slowly starts to build an increasingly tingly sensation in you groin. Your tongue starts to loll out of your mouth as your mother continues caressing your testicles, even going as far as to lick your shaft from time to time as you slowly thrust into your horny friend.

“Oh buck... I wish my kids would do this for me on Mother's Day,” she pants, her words making you scrunch you nose from the mere thought of it. She was certainly something else, that was for sure.

You continue to pound away at the pooch, that ever growing feeling in your groin gaining your attention. You were going to cum soon, and probably pretty hard, and it seems she knew that all too well because she was whining out for you to fill her with your seed. You lean down and rest your head against the dog's shoulder as your tempo picks up, thrusting deeper and harder then before, Lassie letting out a squeal of pleasure as you feel her insides tighten up around your invading shaft.

“Ooooh, Celestia... oooh, goddess I'm cumming!” Lassie screams out with a moan that sounds more like a howl. Her increased tightness drives you over the edge and you snort like a rutting bull into her ear, huffing as you drive yourself into her a few more times.

A shiver goes down your spine just a fraction of a second before you hilt yourself into the purebreed, the head of your cock widening out as you dump your load into her needy cunt, quickly filling her to the brim. With nowhere else to go, cum and pussy juices start oozing out of her tightly stuffed twat, your mother lapping her tongue around your joined sex.

Your cock continues to twitch and throb as you jet even more cum into your... uhh... 'lover', as your mother's tongue only furthers your orgasmic high that you share with Lassie. After a few more powerful jets of cum dump into the dog, your balls are drained and you merely stand there, still mounted in the dog as you pant in exhaustion.

"Buttons, I had no idea how much you've grown,” you mother tells you but it doesn't really register in your mind as you fall to Lassie's side, totally spent, you cock slipping out of her stretched pussy with a 'SLLLLLUCK!'

As you lay on the bed, you hear a licking sound followed by your mother's voice. “Mmm, Buttons, I'm glad to know you've been eating your fruits lately.” You look up to your mother's face buried in Lassie's behind, cleaning her gaping pussy that you just creamed.

You don't get much time to decide whether that's totally gross or totally hot as Lassie leans her upper half on your belly. “Don't worry buddy, I'll get you cleaned up in no time,” she tells you.

You're about to ask what she meant but gasp as she licks her tongue up the underside of your hypersensitive cock, springing it back to full mast. “A-a-ahhh...” you pant as the dog slowly trails her tongue up and down your length, suckling on the base from time to time.

Running her tongue up to the tip, your cock twitches as she presses your girth against her lips then, slowly, starts taking you inch by inch into her maw. You let out a gasp as you look to the dog, who bashes her eyes at you in a dreamy way that makes your heart flutter.

'Dayum... she's good at this!' you think quietly, unable to speak through the moans that are now leaving your mouth. You feel her tight throat wrap around your length as she takes you right to the base of your cock, her nose pressed right against your belly. She lets out a moan that sends shock waves of pleasure down your cock and makes you jerk into her.

She made blow jobs almost as good as actual sex...

You pant and grab her head though you don't dare disturb her natural art as she begin to bob her head against your cock in blissful motions, moaning from time to time as you let out lustful pants. You begin to rock your hips into her mouth, feeling the heavenly feeling of impending orgasm return.

You begin to tense up as you feel your balls tighten. You cock stiffens as hard as they've ever been before. “UGHMPH, LASSIE!” you cry out as your cock begins to throb and twitch, dumping another load into the dog, this time into her stomach.

You give a few feeble thrusts as you finish in the dog's throat and ever so slowly, she pulls her head up, cock sliding out of her throat. She stops however at the very tip and keeps the seal as she gives your flared head a kiss before finally flopping back with a wipe of her lips.

“Man, Elaina... your kid is awesome...” Lassie pants. You don't know why but you feel a little... different... odd even. You still aren't sure if you're totally satisfied with the thought of having sexed that bitch in heat... maybe you're totally disgusted with yourself for having chose to do that... either way, you hear Lassie getting up and hopping off the bed.

“Okay, well I gotta split...” she trails off and looks to you, blowing a kiss your way. “See you around, handsome,” she coos before leaving. A single word leaves your mouth.

“MOOOOOOOOM!”

Author's Note

Well... you sexed a dog. Congratulations?

*This is as sexy as you're getting for a Lassie picture. I'm not getting into racy pictures of animated dogs...*