A three-month-old kitten appeared alert after travelling from Shanghai to Los Angeles in a freight container on a boat.
The orange-and-white short-haired kitten travelled 6,500 miles without food or water and arrived on Wednesday, officials said.
Los Angeles County animal control officers are cautiously watching his health.
The kitten was retrieved from the container at a business where it was delivered.
Animal control director Marcia Mayeda said the kitten ate and slept well at the Carson Animal Care Centre. He woke up on Thursday alert and responsive.
Ms Mayeda said workers named him Ni Hao, which means hello.
The kitten is quarantined, which is standard procedure after entering the US from another country. When he recovers, the shelter will look for foster and permanent homes.