“Brenda,” said Gloria tentatively, “is it true that a dog can… uh, you know. Fuck a girl?” The two girls had been swimming, but now they were drying off in the June sun.

“Oh sure,” said Brenda casually. “I saw it in a video once.”

That was technically true, although the real truth was a lot more than “once.” Gloria noticed the flicker of interest in her friend’s eyes. She decided to escalate.

“Huh,” she went on. “I guess it makes sense. But do you think…” she paused, baiting her friend’s curiosity.

“What?” Brenda strained to keep the thirsty tone out of her voice. “Go ahead, you can ask me.”

“Well…” She cast her eyes downward slightly. “Do you think a dog could fuck a girl in the ass, then?” The words started coming faster now, tumbling out of her. “I just get so horny in my ass sometimes. I wouldn’t ask a guy in case he thought it was gross and anyway you know how the guys are around here and a girl’s got to mind her reputation.” She breathed. “But with a dog, maybe…”

“It’s a possibility, I guess,” said Brenda slowly, as if considering a novel question that had never occurred to her before. “I wouldn’t know too much about it. But dogs can be pretty big… I’ve heard. Maybe even a little too big for your pussy, actually, but I’m sure a dog could fuck a girl’s ass just fine if she was, you know, willing.”

“That’s hot to think about,” said Gloria. “Really hot.”

“Let’s talk about it more later,” said Brenda. “I’m getting too warm here in the sun.”

They went back to the pond to cool down again.

After the swim, they lazily licked pussy for a while, because it was summer, and that’s what girls do.

Brenda pushed just the tip of her finger against Gloria’s ass, which winked and pulsed around it. “Is this what you want?” she teased. “You want it up there?”

“Oh yes,” said Gloria breathlessly. “I do!”

Brenda pushed her finger just a little further in, then pulled it out again. She teased the hole, rubbing lightly all around it.

“Yeah,” Gloria gasped. “Oh yeah, Brenda… oh shit…”

“But… you don’t want a fingertip, do you? You want dog dick?”

“Oh God, yes! I want it! I don’t care if it’s wrong, I want dog dick up my ass.”

“Hmmm. I think we could arrange something.”

****

The next day, when they met at the pond, Brenda had a black-and-white dog with her. He was a medium-sized dog, about fifty pounds, with a shaggy coat, sharp ears, and tufty fur sticking out on his cheeks and around his ears. He seemed to prance as much as walk, and his attention was everywhere at once.

“This is Tip,” said Brenda. “I borrowed him for the day. Look under his tail.”

Gloria looked. “He’s still got his balls!”

“Yep. And look under his belly.”

Gloria looked again. “Oh my gosh!” she said. “That’s… not small.” She felt nervous excitement welling up in her belly. “Brenda? Are we really doing this? It’s so sudden.”

Yesterday, she had been talking big because she liked seeing her friend get worked up. Now it seemed to be put-up-or-shut-up time. She didn’t want to be just an idle talker. And it was true, she did get a powerful horny feeling in her ass sometimes.

“Yes,” said Brenda calmly. “We’re not going to do anything you don’t want to do, okay? But we’ll do everything you want. Right now, we’re just going to let him lick you down there. How’s that?”

“I guess I have to be brave,” said Gloria. “Since you went to all this trouble.”

“Don’t worry,” said Brenda. “He’s a super friendly dog. It’s not like he’d bite you or anything.”

“He is pretty,” said Gloria. Tip, as if aware of her words, struck a handsome pose with the sunlight shining on his coat. “And not too big. He wouldn’t squish me. That’s nice.”

Brenda let Tip off his leash. He barked excitedly, pranced forward, and sniffed around the area of Gloria’s pussy. He could easily smell her arousal. His tongue lolled in the humid air.

Gloria pulled down her shorts and kicked them off.

“Go on, big guy,” said Brenda, “get in there and get some.”

The dog’s wet tongue flicked Gloria’s cunt lips. She reflexively clamped her thighs together.

“I don’t know, it feels weird.”

“Don’t worry,” said Brenda. “Just let him do what he obviously wants to do. It’s totally natural. I’ll sit over there in the grass and leave you two some space to get acquainted.”

“Okay,” said Gloria. She relaxed her thighs, and the dog’s tongue slipped up into her pussy. She began to rub her pussy in small circles with her fingers. She was getting warm, and wet.

“Oh, gosh,” said Gloria. “He’s licking it all up. Oh, this feels good.”

The dog was giving her a long, slow lick. The tip of his tongue passed over her clit. She held her breath, closed her eyes, and shuddered.

“Oh yeah,” said Gloria. “That’s good!”

She spread her legs further, letting Tip lick her asshole for a while, too. Her fingers were moving in a slow, circular motion over her clit.

Gloria hadn’t noticed Brenda move, but somehow, she was sitting closer now. “This is pretty sexy, isn’t it?” she said.

“Yeah, it is,” said Gloria. “It’s crazy, but yeah.” She rubbed her pussy faster.

“You really ought to shave your pussy, Gloria,” said Brenda, who was now quite close to where the lapping and slurping and rubbing was taking place. “It feels so… mmm. Sexy and naughty.”

“I don’t know,” said Gloria, “maybe dogs like it hairy.”

“Fair point,” said Brenda. She stroked her own pussy thoughtfully. Would she be rejected by dogs? It was something to consider.

“Ohhhhhh… I like this,” said Gloria. “I’m soaking wet now. I feel so good. Oh, shit!”

“Hey, G,” said Brenda softly. “You wanted to get your ass fucked, remember? You still want that, right?” She didn’t want to sound over-eager, but she was not going to let this opportunity slip away.

“Yeah, I want it,” said Gloria. “I want it so much. Awwwww, god, yes.”

“He wants you too. Look.”

Gloria looked, and was surprised despite herself. Tip’s dick was sticking straight out, all the way up underneath his belly and even the lower part of his chest. It looked huge!

“Go on,” said Brenda. “Taste it before he puts it in your ass. Don’t be shy.”

Gloria was nearly in a trance, and did as she was told. The dog’s dick was wet and slippery — like warm honey, she thought. She licked it from the pointy prick-tip down to the base. Her pussy dripped.

She put her mouth over the tip of the dog’s dick and held it there. Tip responded enthusiastically. He growled and humped. His dick swelled up. His hairy balls swung forward.

“Oooooh,” said Gloria when she could breathe again. “I think I’m in love.”

“Good girl,” said Brenda. “Now open up the other end. I want to see that pretty little ass. Open wide.”

Gloria spread her cheeks.

The dog snorted. His tongue licked her asshole. She flinched, and then she relaxed into the warm feeling of his tongue running over her backside.

“Ohh,” she said. “That feels really good.”

“Get on all fours for him,” said Brenda. “I’ll help with the, um, mechanics. You just relax and enjoy everything.”

“I think he really likes my asshole,” said Gloria with a little giggle.

“Good,” said Brenda. “So… yeah. Let’s let him take it for a ride.”

Gloria knelt on all fours and spread her cheeks with one hand. Brenda, who was only human, leaned in to sneak a lick for herself and soon found her tongue pressed up against Tip’s as they both licked hungrily at Gloria’s rear entrance.

Then Brenda sat back on her heels and guided the dog into mounting her friend. Tip’s cock was heavy in her hand, not too thick but impressively long. “Too long for me,” thought Brenda privately, but she didn’t see any reason it shouldn’t fit up Gloria’s ass just fine. She was absolutely drooling to see that long shaft disappearing into that little hole.

With her free hand, she prepared the way with a little glob of lube. Then, using a light touch on the dog’s sheath, she steered him to her friend’s slicked-up asshole.

Gloria moaned. Even at a first touch, the dog’s cock seemed huge, and it radiated heat. “Oh god,” she said. “It’s so hot. But it’s not going in.”

“Easy,” said Brenda. “We’ll take our time, and it’ll go.”

Tip thrust forward. His cock was dripping with its own natural lube, and the pointed tip slipped into Gloria’s asshole, sliding in easily and making way for a few more inches to follow it.

Gloria groaned. Her muscles stretched to make room for the hard, hot shaft.

Brenda saw her friend’s eyes widen in nervous anticipation. She did her best to slow the pace and keep everything calm, for the moment, at least. There was going to be some hard pounding soon, but this moment was delicious in its own way.

“That’s a good girl,” said Brenda. “Keep it up.”

“I want it, but it’s so big.”

“Relax, baby.”

“It’s gonna hurt.”

“No, it won’t hurt. You’ll be fine. Breathe deep, and let yourself enjoy it. Think about how you’ve been wanting this.”

Gloria relaxed and let the dog fuck further into her. She moaned.

“Good girl, G,” said Brenda. “You’re getting it.”

“Yeah, I got it,” said Gloria. “I can do it, I can take it. This is what I’ve been wanting.”

Tip humped into her deeply, holding onto her hips.

“Oh, God,” said Gloria, and she made a little whining noise. “Keep going, Tip. Please, just keep going!”

He kept going, deeper and deeper, then finally back out and in again. Feeling confident now, he established his rhythm. Gloria felt herself approaching orgasm surprisingly quickly, and her pussy was dripping nonstop now.

“Oh god,” she whimpered, “I’m gonna cum. Oh god, I’m gonna … Fuck! Fuck! Fuck!”

“Wow,” said Brenda. “You’re really into it. How’s it feel having that much dick in you?”

Gloria braced her arms and arched her back. She made a small whimper. “It’s so big. And so warm, and so hard.” Another whimper. “It’s all in me, god, I can’t believe it. I can’t even believe it.”

She screamed. Her entire body began to quake. She felt a rush of heat that passed all through her body. Her anus had clamped down, squeezing down on the dick inside her. The entire shaft seemed to jerk, first rhythmically, then more spastically, faster and faster. The vibrations shot up her spine, and her stomach muscles clenched, and she came again, hard, without even touching her pussy.

“Oh, yeah!” she screamed, her body shuddering with the intensity of the orgasm. “Ohhh, yes! Oh, fuck! Yes! I’m cumming! I’m cumming!”

She was almost out of her mind now, but she still noticed when something started swelling inside her. Her asshole had tightened around the dog’s cock, and now his knot was growing inside her. It had barely been noticeable while he was thrusting, but now it felt about the size of an orange. A grapefruit? A beach ball? Something pretty fucking big and round, anyhow, and still getting bigger.

“Oh, my god,” said Gloria. “What is that? What is that?” She shuddered and bit her lip, trying to control her breathing.

“It’s his knot, baby,” said Brenda. “Shh, now, relax. He’s going to be stuck in you for a while, and if you just relax, it’ll feel so good.”

“Oof,” said Gloria. “Nnnnnngggggh, it’s so big. I can’t believe it. It’s so big it feels like I’m gonna burst!”

Brenda reached underneath and rubbed her friend’s pussy.

“Mmmmm… you gotta relax, G. You look so hot with that dog meat stuck up your asshole.”

“Arrrrrgh.”

Tip woofed contentedly, quite pleased with his situation.

Gloria shivered as the dog’s knot stretched her.

“He’s cumming in you,” said Brenda. “I can see his balls throbbing. You’re going to have to wait until he’s finished, then he’ll slide out.”

“Argh, um… actually it’s starting to feel really good. So full… so full.”

Gloria clenched her muscles and relaxed them again. The dog’s dick jerked and throbbed as cum pulsed through it. The sensation was strange and wonderful.

“You can feel him cumming?”

“Yeah, it’s starting to leak out of me,” said Gloria. “How can he cum so much?”

“Dogs are like that, I guess,” said Brenda. “Or he just really, really likes your ass.”

She lifted her hand and stroked the dog’s balls gently, curious to feel them pulsing.

“Ahh,” said Gloria, “this is good. This is what I’m made for. What a sweet boy you are, Tip.”

Tip woofed again, appreciatively.

“You sexy bitch,” said Brenda. “Drain that puppy boy.”

“Don’t really have a choice,” said Gloria. She gasped again, and her body shuddered. The dog’s cum kept squirting inside her, building pressure in her rectum.

“Sexy bitch,” repeated Brenda. She held Gloria’s face in her hand and stroked her cheek. “You’re all relaxed now, aren’t you?”

Gloria nodded her head, her eyes glazed. She felt dizzy. She could feel her anus contracting and relaxing automatically, slowly milking the dog’s cock inside her.

“Hey, Tip,” said Brenda. “What a good boy.” She scratched between his shoulder blades. “Fill her all up. I want to see a big gush.”

The dog looked up at her questioningly, as though wondering how much longer he could go. He woofed softly.

“That’s right,” said Brenda. “Give her all she needs.”

She stroked Gloria’s hair, and time passed slowly until Gloria felt the dog’s knot sliding slowly out of her. It stuck briefly in the tightest part, then made a “plop” as it slid the rest of the way out. Immense pleasure washed over her body. Every part of her was limp and relaxed.

She was panting, her mouth open, her whole body shuddering. “Ooh, that was good,” she said.

“Everything you wanted?”

“Yeah, yeah,” said Gloria. “More, actually.” She lay down and rolled onto her back, her arms and legs splayed out in a lascivious pose. A puddle spread out beneath her.

“What do you think, Tip?” she said. “Pretty hot, huh? How’d you like that?”

Tip barked happily.

“You’ve got to try it, Brenda.”

“Maybe… someday, maybe. Right now, how about we just make you feel as good as we can?”

She put her head between her friend’s legs and lapped tenderly. The sun was bright, but there was a breeze picking up. She could hear the wind rustling the branches and little squirrels chattering in the oak trees nearby. Tip was barking up into the trees, apparently having forgotten all about ass-fucking for the moment. Soon enough, though, the idea would occur to him that a second round might be nice. It would be a long, leisurely afternoon for the three of them, with no need to hurry at all.