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“Since when has the TARDIS had a cat on it?” Rose asked the Doctor. Startled, he raised his head from where he was working at the control panel, and turned to see what she was looking at.
Lying complacently across part of the panel, was a large cat, daintily cleaning its paws. Seemingly oblivious to the surprised attention now focused on it. It was rather cute Rose thought, slowly inching forward to pet it.
She jumped back though, when the cat suddenly turned to them and grinned widely showing a mouthful of sharp pointy teeth, before slowly disappearing, the grin hanging creepily in midair for a moment before vanishing as well.
It was and wasn’t anything new.