Authors Note: FOR ALL MY READERS: I AM HAPPY TO SAY THAT THIS STORY IS OFFICIALLY BACK UP ON MY OTHER PENNAME 'BUFFYHALLIWELL'!!!!!!!!!! Anyways, on with the chappy:

Sirius wandered around the castle, looking for Buffy, and when he couldn't find her, he decided to ask Lily as they were supposed to be to Charms in 10 minutes.
He saw Lily in the middle of hers and Buffy other group of friends, and walked up and tapped Lily on the shoulder. She turned and said,
"Hey, Sirius. What's up?"
"Um... Have you seen Buffy?" Lily's face darkened.
"Yes. She went out by the lake and- oops. I wasn't supposed to tell you that. Oh. By the way, you can tell that Potter asshole he has no chance in hell with me now." Lily told him, and he smiled gratefully at her.
"Thanks, Lil."
"Don't mention it." Sirius turned and started to walk away, when Lily called after him,
"Hey Sirius!"

"What?" Sirius said, turning to face her. Lily smiled.
"Don't call me Lil." Sirius pouted.
"But Buffy's allowed to."
"Yes, but we also have nick names for eachother that no one else is allowed to call us, or they get decked."
"What's Buffys?"
"B."
"Oh. Do you think she'll hit me?"
"She's done it before. In fact, how many times is it now? Five times?"
"Ha bloody ha. Six. Thanks LIL."
"Don't CALL me that!"
"Do you hit as hard as Buffy?"
"Harder."
"Well, then I will."
"Asshole."
"Thank you. Adios, sexy!"
Sirius saluted her, and turned around and walked out the front doors, hearing a warning "Sirius!" from Lily behind him.
Sirius found Buffy sitting under a tree in front of the lake, knees to her chest, arms around her knees, her gray hoody next to her, leaving her with a navy blue sleeveless top and jeans, arms around her knees, staring blankly into the lake with tears flowing silently down her face. She was about 20 feet away, and hadn't noticed him yet. He started to walk forwards, but then he got an idea.

Sirius silently walked behind the huge tree, and transformed into his dog form easily. He then walked out from the left side, and sat down facing her side next to her. She turned her head and smiled.
"Hey Sirius." She said, petting him. He barked, licked her face, and wagged his tail in response. Buffy laughed and said,
"Hey! Keep it down! Do you know how much explaining I'd have to do if anyone saw you? 'Oh, hi, Professor Dumbledore. Oh, no. This isn't my dog, it's my best friend Sirius Black.'" Buffy scolded him, but Sirius only barked again, wagged his tail, and turned over onto his back, motioning for a belly rub.
"Oh, no way. Don't even think about it." Buffy said, looking at him. Sirius stood up right, sat down, and put his ears flat and whimpered. Buffy rolled her eyes and said, "And don't give me that look." Sirius only whimpered again. "Oh, knock it off! You look so pathetic like that." Sirius whimpered yet again. "Okay! Fine! I'll give you a belly rub!" Buffy rolled her eyes, and he barked happily and licked her face, then turned back on his back and she rubbed his stomach. She laughed and pulled her hand away, and he sat back up. She laughed and shook her head. He barked.
"Ok. You can turn into Sirius now." Buffy laughed. The dog cocked his head, and turned back into Sirius. Sirius was sitting with his knees up, one arm on his knee, the other on the ground, looking at her, wearing a pair of muggle jeans and a black T-shirt.
"You ok?" Sirius asked
"Oh, yeah. I'm peachy. One of my best friends just told me he wasn't my friend. I'm just fine." Buffy said sarcastically, then rolled her eyes.
"I don't know what got into him! He was fine this-oh yeah. He was up all last night doing that Potions essay the Elliot gave us, so he didn't sleep at all." Sirius told her.
"So WHAT? That's no excuse! There IS no excuse! Did you even hear what he said to me?" Buffy half shouted.
"Buffy! Calm down!" Sirius said, but, like on the train, this only angered her more.
"Don't get me started on the 'Calm Down' thing, Sirius!" Buffy growled. Sirius raised his eyebrows, making her roll her eyes.
"Oh, knock it off with the WISDOM thing already! How come whenever I have a problem, you come and give some of your wisdom? Oh wait, you don't have any! You just talk to me in nonsense words that I can only understand because I am STUPID enough to hang around you for longer than 10 seconds, let alone 5 years!" Buffy teased him, smiling inwardly.
"Thanks a lot!" Sirius said sarcastically. Buffy smiled sweetly. "You're welcome." Buffy said to him. Sirius rolled his eyes. "That's not what I meant." Sirius said. "I know it isn't, but I just like to get on your nerves." Buffy informed him. "So, do you forgive James? That's what I came out here for in the first place." Sirius asked her. "Oh, that's nice. You come out here for James, but not to see if I, one of your best friends, is upset. That's real nice Sirius." Buffy pretended to be mad. "Yep." "That's real great, Sirius, real great. Such a good friend you are." "That's right." Sirius said cheerfully. "Sure." Buffy said, looking at her watch, then saying, "Come on, we've got to be in Charms in five minutes." "You know, I think I just thought of the greatest idea in history." Sirius said, suddenly getting a thoughtful look on his face. "What?" Buffy asked. "I'll tell you on the way to Charms...." At Lunch That Day (Sirius has told Buffy what his brilliant idea was...)
"Guys, guys!" Buffy shouted, running into the Great Hall with a big black dog bounding behind her. She sat down next to Remus and Peter, as she was currently pissed at James.
"Uh, Buff, why is Sirius a dog?" Remus whispered to her. Sirius laid down next to Buffys feet, and put his head on her shoe. She glanced at him, smiled, and told them Sirius' idea.
"Well, Sirius has this idea: That dogs should be allowed to come to Hogwarts too, so we're gonna go see Dumbledore and tell him that this is my dog, and if we can try it!" Buffy whispered excitedly, "And it won't even be a dog! It'll be Sirius! And the he's gonna come to classes as a dog!"
"Uh, one problem: If Sirius is a dog, won't he be marked absent?" Remus pointed out, making Sirius' ears flatten, and Buffys face fall.
"Well, I could tell Dumbledore that Sirius had to go home for two weeks or so. Sirius, up!" Buffy commanded, scooting towards Peter and patting the seat next to her. Sirius jumped up and licked her face. She laughed, and patted him on the head, then her eyes widened.
"Oh no! What am I gonna call him while he's in his dog form?!" Buffy asked them.
"How about Cuddles?" James said, sniggering, making Sirius growl at him.
"No! That's-wait, I'm not talking to you. Remus, any ideas?" Buffy said hastly. Remus shook his head.

"Hey! How about-" Peter started.
"NO!" Everyone said. Buffy began to think.
"Well, what's Sirius' middle name?" Buffy asked.
"We don't know!" James, Remus, and Peter said. Buffy turned to Sirius, who was drooling and looking at the food, inching towards it. Buffy smacked him on the nose, and he whined.
"No. No food yet. What's your middle name?" Buffy asked. Sirius tilted his head and gave her a look that told anyone he wasn't a real dog. A 'how do you suggest I talk in a dog form, genius' look. Buffy rolled her eyes, mumbled "Right." And began to think.
"I got it!" Buffy announced. She turned back to Sirius and said, "Okay, bark once for yes, twice for no." Sirius nodded his dog head. "Okay, are there vowels in your middle name?" There was one bark. Buffy nodded and said, "Okay. E?" Twice. "I?" Twice again. "O?" Twice. "U?" Two annoyed barks. " Well, then it has to be A, right?" One bark. "Okay, I love guessing games! Now, um.I'm just gonna guess... For the first letter: vowel?" Twice. "Consonant?" Once. "K, um...P?" Twice. "N?" Twice. "C?" Twice. "M?" Once. Buffy pulled a piece of parchment out of her backpack, along with her quill that looked like the fur of a white and black tiger, and wrote M. "So, is A the next letter?" One bark. She wrote A. "Hmmm..Oh! I got it! Is it Max?!" Buffy asked. Sirius barked happily. One bark. Buffy smiled. "Ok, we'll call you Max when you're in this form!" Buffy said. "Now, let's get to Dumbledore. Byes." Buffy said, and waved to the boys, and she and Sirius bounded out of the Hall. The boys shook their heads.

Buffy and Sirius, Sirius still a dog, arrived at Dumbledores office and knocked. Stupid idea. No one answered. She knocked again.
"Looking for me?" A voice from behind them said. Buffy and Sirius jumped, and Sirius barked angrily. Dumbledore smiled down at them.
"Come in?" Dumbledore said. Buffy nodded. "Fizzing Whizbee." The doors opened, and Buffy and Sirius walked inside. Dumbledore sat down at the chair behind his desk, and motioned for them to do the same. They did, Sirius jumping up and sitting up straight.
"Nice dog." Dumbledore said, referring to Sirius.
"Thanks. Um, that's actually why I'm here..." Buffy said awkwardly.
"I see." Dumbledore said. "And?"
"Well, I was thinking. It's not fair that cats can come to Hogwarts and dogs can't, is it? SO, I was wondering, could we change that?"
"I see what you mean. Well, if you're dog here can behave itself for a week with you, I'll change it. How does that sound." Dumbledore said.
"Thank you!" Buffy said, jumping up and saying, "Max, come!" Max (Sirius) barked and trotted over to her, she started to walk out, then turned and said,
"Oh! I almost forgot! Sirius is going to be out for a few days. He got a horrible fever and went home by floopowder."
"Mr. Black? Yes, that will be fine. Good day." Dumbledore nodded.
"Thank you." Buffy said, walking out of the doors with Max by her side. When she was out the door, Dumbledore shook his head.
"She's never gonna figure out that I KNOW she's an Animagus, is she? Too bad. Such a clever girl..." Dumbledore mumbled to himself,
That night during detention...
"Well, this is certainly amusing!" James said. He had just walked into the hallway in front of the Great Hall, which they were supposed to wash, and found Buffy and Sirius with huge sponges on their feet, sliding around the hallway, and Buffy fell. Both boys ran over to her.
"Are you okay?" They asked, but Buffy just started laughing. They both started laughing when she got up as she had soap all over her hair and back now, and she picked up a handful of soap and threw it at them, then skated away. They helped James get sponges full of soap on his feet, and they all started cleaning it. When they were almost done, Buffy said,

"This is the perfect time to set off our prank!" Buffy said.

"All ready done, B." Lily said, walking down the huge stairs.

"Lily!" Sirius and Buffy exclaimed.

"Hi. James told me to put them outside, and when it's 10:30, it'll go off."

"Nice thinking James!" Sirius complimented.

"Good one, Prongs!" Buffy said (yes, of course Buffy knows, she an Animagus too, ya know! You'll find out what she turns into later, I still can't decide between my two favorite animals...)

"No problem. Why do you call eachother those weird names? Sirius is Padfoot, Remus is Moony, Peter is Wormtail, James, yes Sirius, I called him James, is Prongs, and Buffy is Nighthawk." Buffy blushed as she remembered exactly why she had gotten that name, and Sirius and James both looked at Buffy and smirked.

"No reason..." Buffy said.

"Hey B, got a date to the dance yet?" Lily suddenly asked Buffy curiously.

"Um...No, why?" For some reason, when Buffy said this, Lily looked at Sirius, smirked, said,

"No reason." And started to put sponges on her feet, humming.

James, Sirius, and Buffy all looked at Lily with raised eyebrows, shook their heads, and got back to work, Buffy mumbling,

"I swear, that girl's gone off her rocker." They started skating around.

By 10:25 they were done cleaning, and had been relaxing on the stairs when all of a sudden Lily screeched,

"OH MY GOD! We have to get back to our dormitories NOW!" The rest had jumped when Lily screeched, asked,

"Why?"

"It's ten twenty-six!" They all scrambled to get up, and ran to their dorm as fast as they could. They got there two minutes before hand, the rest of the dorm asking,

"What? What's wrong?"

"We've been in here for the past twenty minutes, got it?" Sirius said. The rest of the common room, who always covered for them, nodded, and went back to their activities. Sirius, Buffy, James, and Lily, walked over to their favorite chairs and sat down, when Lily said,

"Three, two, one-" right as she said one there was a big BAM! And the sound off fireworks going off. Everyone rushed outside the common room and looked wildly around, then, realizing it was coming from outside, all sprinted outside to see beautiful multi-colored fireworks going all over the lake. The marauders, Sirius, Buffy, and James especially, looked proud. Buffy gasped and said,

"Wow. It's so beautiful." Sirius looked over at her, and only one word sprang to his mind as to how she looked with the fireworks lighting up her face, which was exactly what she had said: beautiful. She had a small smile on her face, and her hair was down and she looked completely beautiful. So beautiful, that he was tempted to bend down and kiss her, but stopped himself. They were friends. That's it. And that's all they'd ever be. But what he didn't know was that he was starting to get feelings for Buffy. Feelings he couldn't control. Little did he know what was going to happen over the next few weeks...

After the fireworks had ended, the all had gone to bed. The next morning Sirius stayed as far away from Buffy as possible, unless he was in his dog form, so he stayed like that all day. He noticed that Buffy was still a little less than warm to James, and he suddenly was hit with an idea.....

*Hmm.... Warm is the opposite of cold, wait! That's it! Opposite and cold equals...hmmmmm...* Sirius thought.

Authors Note: Just wait for it...