A guide dog shows its skills during the "My Dog Is a Superhero" festival in Moscow, Russia, on Feb. 15, 2020. The festival "My Dog Is a Superhero" took place on Saturday in Moscow to showcase skills of working dogs. (Photo by Maxim Chernavsky/Xinhua)

A policeman and his service dog wait for their turn to perform in the "My Dog Is a Superhero" festival in Moscow, Russia, on Feb. 15, 2020. The festival "My Dog Is a Superhero" took place on Saturday in Moscow to showcase skills of working dogs. (Photo by Maxim Chernavsky/Xinhua)

Husky dogs pull a sled during the "My Dog Is a Superhero" festival in Moscow, Russia, on Feb. 15, 2020. The festival "My Dog Is a Superhero" took place on Saturday in Moscow to showcase skills of working dogs. (Photo by Maxim Chernavsky/Xinhua)

A service dog shows its bomb-searching skills during the "My Dog Is a Superhero" festival in Moscow, Russia, on Feb. 15, 2020. The festival "My Dog Is a Superhero" took place on Saturday in Moscow to showcase skills of working dogs. (Photo by Maxim Chernavsky/Xinhua)