People run with dogs during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year. (Photos: Xinhua)

A dog runs with its owner during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.

People run with dogs during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.

A dog runs with its owner during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.

A woman runs with her dog during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.

A man runs with his dog during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.

People run with dogs during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.

A dog runs with its owner during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.

People run with dogs during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.

People run with dogs during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.

People run with dogs during an annual "Fast Dog" race in Moscow, Russia, on Oct. 3, 2020. More than 140 people took part in the race this year.