Para-dressage rider Sydney Collier suffers from a rare condition called Wyburn-Mason syndrome which causes tumors in the brain. "Less than 100 people on earth have this," says Collier.
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A tumor behind Collier's right eye has made her partially blind. Her service dog, a white standard poodle called "Journey" has has become a star in his own right. "Journey is amazing," she says. "The list of things he can do is probably longer than the list of things I can do."
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Collier finished ninth of 25 riders at last year's World Equestrian Games and is tipped to star for the United States at the 2016 Rio Paralympics.
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In 2009, Collier suffered a stroke that left her paralyzed on her left side.
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Collier is dreaming of going to next year's Paralympics in Rio but will need to impress selectors at the U.S. nationals later this year as well as participating in two team qualifiers in Florida next January.
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"Rio would be the next stepping stone," Collier says. "I hope I can use it to inspire other people through my journey."
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Collier alongside Journey at the 2014 FEI Awards. The 17-year-old won the Against All Odds award presented by then president of equestrianism's world governing body, HRH Princess Haya (left).