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WASHINGTON-- A Dora the Explorer guitar, dragster cars with small wheels and finger-fidget desktop magnets are among the toys consumer advocates are warning about as the holiday buying season begins.

The U.S. Public Interest Research Group examined more than 200 toys on store shelves and found about a dozen that could be dangerous for children.

The Dora guitar was too loud, PIRG said, and tested slightly above the limit that hearing experts recommend. The dragster car had small traction bands on the wheels that could be a choking hazard.

Another big worry for the consumer group this year is small magnet toys. The magnets, such as the ones in the popular Buckyball desktop toys, can cling together if accidentally swallowed, pinch internal tissue and lead to serious injuries.