Susan Boyle pulled out of another Britain's Got Talent concert last night. The reason? The You Tube sensation apparently had a fit over her cat, Pebbles, according to the UK Mirror.

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"She kept shouting, 'I want my cat! I need my cat!' I think people felt sorry for her as she was clearly unhappy," a witness tells the paper, which reports she yelled from a balcony overlooking a Liverpool hotel atrium.

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Boyle lives with Pebbles in Scotland. She also asked for her kitty outside the Priory Rehab clinic, which she briefly checked into after losing the British talent competition.

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A Britain's Got Talent spokesman said yesterday: "She's just tired. She's going back to London for a sleep and a bit of rest." Boyle also pulled out of a Manchester concert last week after doctors advised her to rest.