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A pet dog jumps through a hoop during the training event of the 2017 Woofstock at Woodbine Park in Toronto, Canada, May 27, 2017. (Xinhua/Zou Zheng)
A pet dog jumps through a hoop during the training event of the 2017 Woofstock at Woodbine Park in Toronto, Canada, May 27, 2017. (Xinhua/Zou Zheng)