Red Pandas Jaya and Wasabi are the stars of the live-stream.
He will arrive this weekend at Reid Park Zoo in Tucson - some more should follow.
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They were born in June at Philadelphia Zoo.
The cause of the death is yet unclear - a necropsy at the University of Tennessee Veterinarian Hospital is scheduled.
Three female Red Pandas will live in an brand new Red Panda home.
Mother Louanne gave birth to a female Red Panda on June 26th at Zoo Dresden in Germany.