China's state news agency Xinhua has described a US military deal with the Philippines, which grants US forces a larger presence in the country, as "disturbing."
President Obama is currently in Manila on the last day of his four-day Asian tour to bolster America's ties with southeast Asian countries.
Given that the Philippines is at a bitter territorial row with China, the move is particularly disturbing as it may embolden Manila in dealing with Beijing.
A more assertive or even reckless Manila would stoke regional tensions and in turn upset Obama's policy of rebalancing.
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The 21-year-old, who was arrested on Sunday, also allegedly injured two other people in the attack in the German city of Reutlingen.
She was going to the aid of a family member who got out of the car in the middle of the park and was dragged away by a different tiger.
The man, who was in his 30s, has not been identified, while several other people are believed to have suffered serious injuries.