I know Russell Brand is a veggie and an animal lover so would have the animal's best interests at heart, but like some of the other members, I have to agree that a trained cat would probably fit the bill best, Robbie.
The most extrovert cats within their own home can become real scaredy cats when placed in a strange environment, which is only natural, but I wish you luck.
I hate Big Brother and don't much care for B.B's Big Mouth but I do like Russell Brand...love his Radio 2 show. I honestly thought the guys at the Beeb had lost their minds when they gave him that Saturday night spot but he is terrific...and very entertaining.
Best wishes,
Roz