Suitable

It was supposed to have been the dog. Daniel loved his pet labrador, and Missy had been his loyal companion for seven years, over half his life. No doubt she would not have objected to it.

However, the screams from Kelly’s room indicated that something unexpected had happened. Leaving Missy behind, Tim ran over to check on his big sister, hoping that whatever was upsetting her had nothing to do with the spell he had just cast. Unfortunately, it was just as Daniel had feared. He found Kelly sitting on her desk chair, staring at her hands, watching them grow rapidly larger as cyan fur sprouted from them.

“What’s happening to me?” Kelly cried, watching her fingernails lengthen into pale green claws, while thick, dark blue pads formed on her fingertips and palms. Moments later, her hands had doubled in size and reshaped into beastly anthro paws.

“Oh, no,” Daniel said, realizing what he had done.

He thought for a moment, trying to come up with a way to stop the transformation, but he had no idea how the spell actually worked. He had only known enough about it to cast it. The magic card and letter he was holding had said nothing about stopping the spell early. It was now out of his control. He could only watch in silent awe as the fur crept up his sister’s arms, turning paler as it spread to the rest of her body.

Kelly winced and looked down at her feet. Her shoes bulged, stretching their canvas fabric to its limit. Then, furry cyan toes burst free as her shoes split open. She grunted in relief as the pressure was relieved, then shrieked in horror as she watched her cyan feet swell wider and longer, forming into a pair of enormous paws, matching the size her hands had become.

While Kelly stared in shock at her giant paws, the transformation reached her backside, causing a huge fluffy cyan tail to extend from the base of her spine and explode out of her jeans. It grew and grew until it was even longer than her legs and as thick as her waist.

Then, as the rest of her body began to grow, the fur reached her neck and rose up over her face. Her nose became dark blue, and she winced as it stretched away from her face, growing into a wolf snout with darker cyan fur on top. She gasped, showing off long canines and lines of sharp teeth beyond. Her ears grew into pointy wolf ears with tufts of green fur inside, matching the same tint of green on her claws. Finally, her own hair shortened and turned green as well, and then not a trace of her original body remained.

Kelly opened her eyes and Daniel saw her green irises dart around, trying to look down past her snout as her furry body outgrew her clothes, tearing them apart at the seams. The growth continued all over. Soon, even sitting down, she was taller than Daniel. Her body swelled with buff muscles as her shoulders broadened. At just about the same moment that the last of her tattered clothes fell off of her hulking frame, the creaking desk chair beneath her collapsed under her weight, dropping her heavily on the floor. And, there she sat when the growth finally ceased.

The two of them stared at her colorful, giant, anthro-wolf body in stunned silence for a few seconds.

It was their dog, Missy, who broke the silence, barking excitedly at Kelly and wagging her tail, as if she had just discovered a new friend to play with. Missy ran over to Kelly and began frantically sniffing her furry body all over. Kelly was too overwhelmed to resist.

“What…?” she started to ask and gasped, wide-eyed, covering her mouth with her forepaws in response to the deep sound of her wolf voice.

“Kelly?” Daniel said, taking a step closer to her enormous furry feet. “Are you alright?”

“I’m…” she said and hesitated to continue for a moment. “I’m… huge.”

“Yeah,” Daniel replied, not really knowing what else to say.

Missy barked cheerfully and ran off, most likely to find a toy for them to play with together.

“Why?” Kelly asked, staring at her paw-like hands again. “Why am I all furry? Am I a werewolf? What’s going on? How did this happen?”

“A spell turned you into an anthro wolf,” Daniel explained.

“‘A spell?’” she said, lifting up her fluffy tail to look at it. “What spell? What are you talking about?”

“Well,” he said, averting his eyes. “You see, it was an accident. I-”

“Wait,” she said. “Did you do this?”

“I-I didn’t mean to,” he said, taking a step back.

Kelly pulled her giant feet paws close and unsteadily stood up from the floor. After finding her balance on her wolf-like hind legs, she rose to her full height, her pointy ears nearly brushing against the ceiling.

“What did you do to me?” she asked, her voice coming out in a growl.

Seeing her standing over two feet taller than him and several times heavier than him, Daniel felt like cowering or running, but he worried how she might respond if he did. Instead, he stood his ground and confessed, “I-I tried to cast the spell on Missy, but it targeted you instead. This was just an accident.”

“What spell?” she demanded. “Just explain what you did, already.”

“I ordered a spell from a witch,” Daniel explained. “I wanted some way to be able to look like you do now.”

Kelly looked down at herself and back at him. “What are you, a furry?”

Daniel nodded.

Kelly sighed and said, “So, that’s what I caught you drawing that one time.”

“I just wanted my own fursuit,” he said. “They’re really expensive, though, like thousands of dollars.”

“And, you found a witch somewhere that could help you?”

“She’s got a website,” Daniel said. “I ordered a spell that was supposed to create a custom fursuit for me, but what she sent me was really different than what I expected. Instead of creating something out of nothing, it needed to be cast on a suitable target animal to transform it.”

“‘Animal?’” Kelly asked, annoyed.

“I tried to cast it on Missy,” he said. “I guess I messed up, or maybe it thought you were more ‘suitable’ somehow.”

“So, you were going to turn our dog into your personal fetish outfit?” she asked.

“It’s temporary,” he said, holding up his hands defensively. “It turns the target body into whatever I imagine when I cast the spell. After that, I just need to touch the zipper on the target body’s back, which should turn it from flesh into an empty fursuit. Then, I can wear the suit, and it should fit me perfectly. I’m not sure how, but that’s what the note said. Finally, when I take the suit off, it’s supposed to transform back into what it was before I cast the spell.”

Kelly groaned and rested her paw hands on top of her head, as if she were fighting off a headache. She asked, “Is there some way to undo this right now?”

“I don’t think so,” Daniel said. “I think I need to wear the suit first before the spell can finish.”

Kelly sighed and asked, “Where is this spell she sent you?”

Daniel held up the contents of the witch’s letter: a black card with the magic spell drawn on it in silver ink and an accompanying note that explained the spell. Kelly took them both from him and turned around to find a place to sit and read. However, she did not account for her tail and nearly knocked Daniel over with it. With her chair destroyed, she decided to sit on her bed, but her increased weight made the mattress creak and sag beneath her as she rested her furry butt on it. Daniel waited and watched as Kelly examined the documents she held in her enormous paw hands.

“This handwriting is so small,” she said, squinting. “I can barely read it.”

“Did I miss something about undoing the spell?” he asked.

She scanned the note for a little while longer and lowered it down with a sigh. “No,” she said. “Apparently, you read it right. You have to wear the suit first.”

“So,” Daniel said, nervously rubbing the back of his neck. “What now?”

Kelly gave him an annoyed look and said, “Well, I can tell you what’s not going to happen. Nobody’s wearing me like a suit, especially not you.” The mattress creaked in relief as she stood up. Then, she set the documents down on the bed and crouched down to start searching through the remains of her clothes.

Daniel collected the spell card and note from the bed as Kelly found something and stood up again.

She walked around her bed and began sneaking curious glances at herself in the mirror, while fiddling around with a little rectangular object in her paw hands. It took a second for Daniel to recognize that it was her phone as it seemed so tiny now compared to her giant paws.

“What are you doing?” Daniel asked.

“I’m calling mom and dad,” Kelly said. “You’re going to be in so much trouble.”

He watched as she repeatedly tried to press something on the touch screen, but each of her digits was large enough to cover the whole screen by itself, making it impossible to operate the phone.

Eventually, she gave up and groaned in frustration, “These stupid paws are too big to do anything!”

She abandoned her phone on her bed and sat on the floor, her ears drooping sadly.

“Are you okay?” Daniel asked.

“I’m a dog,” she replied.

“I’m sorry,” Daniel said, taking a seat on the bed beside her. “I really am.”

Kelly glanced at him and sighed. “I believe you,” she said.

“Do you forgive me?” he asked.

She gave him a doubtful look that seemed to say, “Really?”

“Do you want to try to finish the spell now?”

She shook her head and said, “Not yet. Give me a little time to get ready.”

“Okay,” he said, checking the clock to see that they had a few hours before their parents would be home. There was still time to kill. “What do you want to do for now?”

“Let’s see what’s on TV,” Kelly suggested and stood up again. Heading for the hallway, she stooped down and squeezed her massive furry body through the door frame. Steven waited to follow her out until her tail was safely out of the way.

***

Sitting on the couch downstairs later on, Kelly noticed something she had overlooked before. “Hold on,” she said as she gently pushed Misty’s snout away from her crotch. “I’m a guy wolf?”

“Uh,” Daniel said, awkwardly. “Yeah. You turned into the fursuit I imagined for myself, which is a male wolf.”

Kelly glanced at her crotch and said, “I thought something felt a little… off, down there.”

“Sorry,” Daniel said for probably the tenth time that evening.

“That would explain the voice as well,” Kelly said, rubbing her throat. “Weird. I mean, not as weird as being part animal, but still weird.”

Trying to change the subject, Daniel asked, “Do you want to watch another episode?”

She sighed and petted Missy on the head with her huge paw hand. “Not really,” she said. “I don’t think more TV will make this any easier.”

Daniel shut the TV off and waited for her to make the next move.

“What’s it going to feel like for me?” she asked.

“I don’t know,” he confessed.

“Is it going to hurt?”

“Did it hurt when you changed earlier?”

She shook her head.

“I suppose it won’t hurt this time, either.”

“Will I still be… awake, when you put me on?”

He shrugged.

She sighed.

After a long minute of silence, Kelly stopped petting the dog and stood up, saying, “Alright, let’s get it over with.”

“You’re ready?” Daniel asked as she stood up.

“Not really,” she admitted. “But, I don’t want to put it off any longer. Do it.”

Kelly turned her back to him and Daniel located the shiny metal tab of the zipper between her shoulders. Before he could grab it, though, she said, “Just put me on and take me off right away. Okay?”

“Sure,” Daniel said and grabbed the zipper.

The change was instantaneous. As soon as his fingers made contact with the metal, Kelly’s body became hollow fabric, and she collapsed to the floor in a furry heap.

“Kelly?” he asked.

“This feels so weird,” her regular female voice said from out of nowhere. “I can’t move at all, but I can still sense everything. I feel so empty inside.”

Daniel picked up her wolf head and turned its smiling snout to face him. While he saw no sign of it being anything but a regular fursuit head, he knew that his sister’s mind was in it, still.

“Okay,” her voice said. “Hurry up and put me on.”

He set her head down safely on the coffee table. Then, he unzipped the back of her suit body and stepped inside of it, one leg at a time. His arms slipped into the suit’s arms before reaching behind himself to zip up the back. Disappointingly, the whole thing hung loosely from him, being much too big to fit his body properly.

“Wow,” her voice said. “That’s so weird. I can feel you inside of me, moving me around, like I’m a puppet or something.”

He stepped into her foot paws and slipped on her paw hands, both of which were similarly oversized for him. All that remained then was the head. He lifted it up, and put it on like an enormous helmet.

“There,” Kelly’s voice said, once he was fully enclosed in the suit. “You put me on. Now, take me off.”

Daniel sighed, realizing that he would not even get a chance to look at himself in a mirror. “Okay,” he said and tried to lift the head off, again. However, it would not budge.

“What’s the matter?” she asked.

“It’s stuck, somehow,” he said, struggling to get free of the suit. It seemed that the suit parts had all joined together into one continuous piece of fabric, trapping him inside.

“Uh oh,” she said. “Do you feel that?”

“Yes,” he said, “It’s starting to cling to me.”

At first, Daniel thought that the suit was shrinking to fit him, but he soon realized that he was actually growing to fill it up. The sensation was thrilling. Limbs lengthened. Muscles swelled. Hands and feet reshaped and expanded into paws. His spine extended into the tail. Then, finally, his face stretched out into the snout as his ears pulled up into points.

When he had fully filled the contours of the suit, it clung to him, skin tight. Moments later, even that separation disappeared, and the suit had become his own furry skin. He ran his paw hands over his furry body, testing if the former suit could feel his touch. He was delighted to discover that it did. The suit behaved exactly as if it were a part of him. In all practical ways, he had fully transformed into the furry body of his dreams.

Daniel flexed his massive muscles and enjoyed the sight and feel of his gigantic paws, clenching and spreading his bulbous digits. “Amazing,” he said, delighting in the deep rumble of his wolf voice. “This is amazing.”

“I’m glad you’re enjoying it, at least,” said Kelly’s voice, seeming to emanate from within his own head. That startled him. He had been so focused on his transformation that he had almost forgotten that she was the suit he had been filling up. “Now, could you please take me off?”

“B-but,” he stammered in a way that was reminiscent of his whiny boy voice. “Do I have to?”

“You said you would,” Kelly reminded him, her voice taking on a scolding tone. “That’s what we agreed on.”

“Can’t I have just a little longer?” he pleaded. “I’ve barely had a chance to move.”

She sighed and said, “Fine, but don’t take too long, and no weird stuff.”

“Weird stuff?”

“You know what I mean,” she said. “I can feel everything you're doing. Don’t make me feel anything… unpleasant. Okay?”

Daniel smirked and got down on all fours. “What?” he asked. “You mean like this?” He curved his body sideways to put his snout near the base of his tail and took a big whiff with his extremely sensitive nose.

“Ew!” Kelly cried. “That’s so gross. Stop sniffing your butt!”

Daniel chuckled and took another big whiff.

Kelly could only groan in frustration, unable to do anything to stop them from smelling that inhuman stink. “Very mature,” she said, with deep sarcasm. “I’m sure you're proud of yourself.”

Ignoring her, he took a seat on the floor just as a dog would with his front paws on the floor. It felt good to be part animal. It felt good to be so big and hairy. He stood up and stretched his paw hands up until they touched the ceiling. This body felt so strong, so powerful. He was a beast, a monster. He felt a strong impulse to lift something heavy, so he slid his paw hands beneath the couch and flexed his arms, standing up with it cradled in his arms. It was not light, but he held it up without exerting himself very much.

“What do you think of that?” Daniel asked.

“That’s… kind of amazing,” Kelly confessed. “Now, put it down before you drop it, please.”

He lowered the couch back down to the floor and stepped back. “I bet I could carry anything in the house now,” he said, flexing his massive arms.

“Let’s not break anything,” Kelly suggested, but the scolding tone of her voice had softened. “Maybe go check yourself out in a mirror. I know you want to.”

It was true that he wanted to, but he had a feeling that she did as well. “Okay,” he said. He bounded up the stairs on all fours, taking only a second to ascend to the top floor.

Then, Daniel stooped through the small doorway into their parents’ bedroom and approached their mother’s full-body mirror. He needed to tilt it back to see his own face in it. Even when he did, he could not see his whole body reflected back at him at once. He was just too huge now. Still, he absolutely adored what he could see. He traced the shape of his pointy ears and opened his mouth to touch the pointy teeth within before letting his long tongue loll out.

“You’re liking this too much,” Kelly said.

“Can you feel me liking it?” he asked.

“I… I think so,” she said. “Maybe I’m picking up on your emotions. I’m feeling what you're feeling. Remember?”

Smiling, he lay his broad paws on his chest and let them brush gently against his nipples.

Kelly gasped at the stimulation. “What are you doing?” she asked, sounding more surprised than upset.

“Feeling,” he replied. “Want to feel some more?”

“What?” she said, anxiously. “Why would I want…? I mean, we shouldn’t? Right?”

“Why not?” he asked.

“I’m your sister. I can’t.”

“We’re a big furry monster right now,” he said. “There’s no brother or sister here.”

“But…” she said and let the word hang there. Apparently, she could not come up with a reason not to, or maybe his desire had affected her to the point that she now wanted it as much as he did. Whatever the reason, she kept quiet.

Daniel fondled his chest again, their chest, and they both moaned in pleasure. Looking down, they saw something vividly pink emerge from the cyan fur between their legs.

“Oh,” Kelly said, sounding just as aroused as he felt. “That feels…” She moaned. “...so good.”

Daniel gently let the fur of their paw hand brush against their swelling wolf cock. Teasing it and eliciting a quick squeal from Kelly.

“Should we stop?” he asked, knowing how he would respond and, therefore, how she would.

“More,” she said, a wild hunger in her voice. “I want more.”

“You sure?” he verified.

“Yes!” she cried with overflowing enthusiasm. “Please, do it. All the way. I want it.”

He started stroking with their paw, trying to avoid the rough surface of the pads. It was quite stimulating, but he felt like he wanted more. Feeling their long tongue lolling from their mouth again, an idea came to him.

“Can we reach it?” Kelly asked, hopefully.

There was only one way to find out.

Daniel sat down, leaned forward, lowering their snout to their crotch, and started licking. Their drool was soon slathered all over their pink cock as the slick texture of their wolf tongue stimulated it far beyond what their paw could manage.

“Oh, God!” Kelly exclaimed. “It’s so…” Her voice trailed off and became a squeal of delight.

They came. The pleasure reached a mind-blowing peak, flooding them with pure joy. Some salty warm substance spurted into their open mouth, but Daniel was too lost in the orgasm to care. He just kept licking as their body shuddered in nearly unbearable glee. When the spurting stopped and he had licked their crotch clean, he slumped to the floor in a spent furry heap, waiting for their breathing to calm down.

“Amazing,” Kelly said. “Simply amazing.”

They lay there on the floor of their parents’ bedroom, inhaling and feeling the wolf body’s barrel chest expand, then exhaling and feeling it deflate. It felt good to be a beast. They flexed their thick furry fingers and toes, relishing the power in them.

“I almost don’t want to go back,” Kelly admitted.

Daniel was glad that she said it first. He felt the same way, of course. Nothing would make him happier than to spend the rest of his life in this big furry body. If only…

Thanks to their keen wolf ears, they heard the car pull up the driveway to the house, even before they noticed the headlights shining through the blinds.

“They’re home!” Kelly said as Daniel sat up. “Mom and Dad are back.”

He started trying to reach behind their back.

“Hurry,” Kelly said. “Take me off!”

Daniel grunted and stretched an arm around. “I’m trying,” he said. “All these muscles are getting in the way. I don’t know if we’re even flexible enough to reach the zipper.”

“Are we stuck like this?” Kelly asked, not sounding entirely unhappy.

At last, the tip of one finger brushed the end of the zipper, and Daniel felt himself deflate, rapidly shrinking back to his normal size within his fursuit sister. He popped the head of the suit off and unzipped Kelly’s body to free himself.

Downstairs, he heard a door open, followed by their parents chatting together.

Daniel set the suit’s head down on the body and waited a moment for a sign that Kelly was transforming back to normal.

“What's wrong?” her disembodied voice asked. “Why am I not turning back?”

Daniel checked the card. “I don’t know,” he said, not seeing anything on the card that would explain this.

“Quick,” she said. “Put me in my bedroom.”

Daniel gathered his sister’s furry parts into his arms and carried her out of there.

“Now, go downstairs,” she said, as he set her parts down on her bed. “Stall them. Maybe I just need a little more time.”

“Okay,” Daniel said and ran out of the room, shutting the door behind himself before sprinting down the hallway and galloping down the stairs.

“Daniel,” his father said. “What’s the rush?”

“Rush?” he repeated, panting. “Don’t know what you mean.”

“Is everything alright?” his mother asked.

“Everything’s fine,” he replied, regaining his composure.

“Where’s Kelly?” his father asked, looking at the stairs.

“She’s changing,” Daniel said. “Her clothes,” he added. “She wanted to get ready for bed early.”

Daniel watched nervously as his parents headed for the stairs and walked up them. He followed close behind them, hoping that Kelly would be back to normal when they got there.

The hallway was empty at first. Then, to Daniel’s relief, Kelly stepped out of her bedroom, wearing her pajamas and appearing fully human again.

“Hey, Sweetie,” their mother said. “How was your evening? Did you two have some fun together?”

Kelly and Daniel exchanged a nervous look as the enormity of what they had just done together finally sunk in.

“Yeah,” Kelly said. “We really… bonded.”

“Never felt closer,” Daniel said.

Their parents replied approvingly before moving on to their bedroom to change into something more casual.

Meanwhile, Kelly and Daniel were left in the hallway, silently contending with their shared shame.

***

The rest of that week, the two siblings barely spoke to each other. In fact, they were actively avoiding interacting at all, neither of them wanting to have to deal with what happened. If she was in a room, he would go to another one. If he was in the hallway, she would duck into a different room to keep out of his path.

At first, Daniel thought this was due to regret. He assumed that Kelly was wishing that they had never done what they did as the wolf. Then, he noticed her glancing at him, looking as though she wanted to speak but was too hesitant to begin.

Finally, one afternoon, when they were home alone together again, Daniel returned from taking Missy for a walk to find Kelly sitting at the kitchen table, apparently waiting for him.

After silently watching him remove the leash and give the dog a treat, Kelly said, “I’m not upset.”

Missy gave her a friendly sniff before wandering off into another room. Kelly seemed too preoccupied to notice.

“You’re not?” Daniel replied, noticing that she was gripping a folded piece of paper in her hands.

“I just needed a little time to process everything,” she said. “That was kind of a weird experience.”

“I’m sorry,” he said. “I never meant for you to…”

“Wait,” she said. “Please, just, let me finish what I have to say, first.”

“Okay,” he said, wondering where this was going. He took a seat across from her at the table.

“I’ve been feeling really weird since we did that,” she continued. “For a little while, I thought I was angry with you. I kept obsessing over you and what we did together. It took me a day or two to realize what I was actually feeling. I wasn’t angry. I was fantasizing about doing it again with you.”

“Really?” he replied, surprised.

“I keep remembering how big we were and how good it felt to… you know. Then, there’s the whole furry thing.” She paused.

“Did you… like it?” he asked, the hint of a smile on his face.

She nodded and handed the paper she was holding over to him.

Daniel unfolded it and saw a crude drawing of a voluptuous white and purple tiger woman drawn on it. He asked, “Is this…?”

“My fursona?” she replied. “I think that’s what it’s called.”

Daniel nodded.

“I don’t know why I drew that,” Kelly confessed. “I never used to get excited by stuff like this before. Now, it's, like, constantly on my mind. I just want to be a big furry animal, more than anything else. I wonder if maybe I absorbed some of your… preferences? I guess… while we were merged together. Maybe.” She shrugged. “I don’t know. I don’t really care, though. Whatever the reason, it seems that I’ve become way into the same kind of furry stuff that you like.”

“I see,” Daniel said. “Then, you want more?”

Kelly nodded, enthusiastically. “I thought we could try using the spell the other way around this time,” she suggested. “I could wear you as my fursuit. Then, after that, we could take turns. You know?”

Daniel smiled. “Sure,” he said. “I’d love to.”

Kelly smiled back, and they giggled together, feeling simultaneously naughty and giddy as they wondered how soon they could do it together again.