PHILADELPHIA (CBS) — United Airlines will stop shipping unaccompanied pets on flights after a series of problems.

Starting Tuesday, the airline will stop accepting new reservations to put pets in the cargo hold of planes.

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The move comes after United Airlines accidentally put two dogs on the wrong flights last week.

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Another dog died after the flight attended forced its owner to put the pet in an overhead luggage bin.

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The airline plans to review its pet shipping program by May 1.