Owners of the 312 pooches scrubbed the animals' teeth for three minutes using a special brush and gel, as they sought to set a new Guinness World Record in the category "most people brushing dogs' teeth simultaneously".
Organisers said the event, held in Stanley on the south coast of Hong Kong Island, was aimed at promoting a hygienic lifestyle for dogs and raising funds for a dog rescue centre.
"A lot of people take care of their dogs' hair and their diet but not so much their teeth," Hilda Wong from The Link real estate firm, which organised the event, told AFP.
"Brushing teeth is crucial for dogs, it's just like brushing their hair. You don't have to do it every day but it's good to do it once a week because they eat and chew," she added.
Wong said it will take three to four months for Guinness officials to certify whether the event is a new Guinness World Record.
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