the_debt_of_time

"It's in the saliva, stupid! Mia told you that every year. And even then it's only in a
bite when you're fully turned!" Sirius lowered his wand and ran frustrated fingers through
his hair. "Merlin, you know all of this, Remus!"
"There's no conclusive evidence," Remus muttered quietly.
"No conclusive.. ." Sirius snarled, threw his wand down, and launched himself
forward, sinking a balled fist into the side of Remus's jaw.
Remus stumbled backward and turned, hitting Sirius hard on the side of the head.
Just as his fist connected, Sirius shifted into Padfoot and latched his jaws onto Remus's
forearm tightly, growling loudly as Remus continued to shout and growl back.
"What in Merlin's name?!" Hermione screamed as she burst through the door, Harry
and Ron right behind her. "Immobulus!"
Both instantly froze.
"Are you both mad?!" she snapped and retrieved their wands—Remus's from his
hand, and Sirius's from the floor.
With a flick of her wand, Padfoot fell to the ground, growling. He quickly shifted
back into human form and moved to the other side of the kitchen as Hermione unfroze
Remus.
"Now, one of you tell me what happened!"
"Tonks is pregnant," Sirius said hastily.
"That's wonderful!" Hermione brightened, and she moved to hug Remus, but he
shrugged her away, guilt plastered on his face. "What's wrong? Is Tonks okay?"
"No, she most certainly is not okay," Remus barked.
"Watch your tone with her, mate," Sirius growled ominously enough that both
Harry and Ron stepped away from him, looks of genuine fear in their eyes as they kept
drawn wands moving between the two wizards.
"What's wrong with Tonks?" Harry finally blurted out.
"The baby could be a werewolf," Remus said out loud for the first time
Sirius rolled his eyes. "He's an idiot!"
"Oh, Remus." Hermione approached him carefully, placing a gentle hand on his
unwounded arm. "Come sit down, and let me fix that." She gestured to the large bite wound
on his other arm where Sirius had latched on.