(CNN) - A couple of tiger cubs from different families will grow up together as brothers.
An endangered Sumatran tiger rejected by his mom was flown from the National Zoo in Washington to the San Diego Zoo Safari Park on Monday.
There, he met a Bengal tiger cub rescued during an alleged smuggling attempt at the Mexico border.
The two became instant friends, wrestling, jumping and playing.
Zoo keepers will closely watch them for the next day or so.
If things keep going well, visitors at the Safari Park will be able to see them both in action through the zoo's nursery window.
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