Clash of the Kittens
Disclaimer- JKR. Enough said.
Crookshanks was silently waiting in a long, dimly lit corridor. Above him hung a tapestry of a man with troupe of trolls. Lying still, Crookshanks flicked his tail with slight impatience.
Because he knew his Mistress was being bad, the bandy-legged cat had assigned himself to guard duty. He knew that Mrs. Norris had it in for his Mistress and her friends, so Crookshanks was making sure that she never led her Master to his Mistress.
The soft sound of approaching footsteps made the cat stiffen. Wrinkling his nose, Crookshanks took a sniff. It was Mrs. Norris. Dumb dog bait!
The ginger cat heaved himself to his paws and started for bend in the hall. He was almost at the corner when Mrs. Norris came round. She saw Crookshanks and stopped dead in her tracks. She tilted her head to the side, surveying her fellow feline with an air of suspicion.
"Where are you, my sweet?" called a reverberating voice that sounded like it was coming some distance away.
Crookshanks bared his teeth at Mrs. Norris and gave her a hiss that communicated I'll protect Mistress from your Master! With that, the bandy-legged cat pounced on his foe.
MER-OOOWW!!! Mrs. Norris let out a yowl and the two cats were flying at each other, rolling down the hallway, scratching and biting, their cries echoing of the walls.
Following the sounds of the cat fight, a panicked Filch appeared in the corridor. He stared in horror at the spectacle until another screech from his beloved cat compelled him to move.
"Mrs. Norris!!" he yelled, his voice terrified as he ran down the hallway as fast as his hobbling gait could carry him. Reaching the still-dueling cats, he aimed a kick at the ginger beast attacking Mrs. Norris. He missed, which made him lose his balance and fall hard on his tailbone.
Mrs. Norris finally managed to get away from Crookshanks, still spitting and hissing. The bandy-legged cat still thought they were too close to his Mistress, so he launched himself once again at the other cat. Mrs. Norris ran away and Crookshanks tore after her.
Crawling to the wall, Filch managed to pull himself up. His eyes dreadfully followed the angry cats. Afraid for Mrs. Norris, he began after them, running and hobbling.
Peaking out the door, a voice whispered, "No sign of Filch or Umbridge! Let's go!" A line of students donning crests from Gryffindor, Hufflepuff, and Ravenclaw clandestinely exited the Room of Requirement.
A/N- Yes, I realize I've anthropomorphized Crookshanks. I'm justifying myself with the belief that he's pretty smart for a cute little furball. He's like a mini-Chewbacca. Also, if you didn't catch it, this takes place during HPOotP. Review if you feel like.