An Illinois-based animal-rights organization is claiming that horses at this year’s Fiesta de Los Vaqueros were treated with unnecessary cruelty. An agency called SHARK, or Showing Animals Respect and Kindness, has filed a complaint Monday morning with the animal services division in Arizona’s Department of Agriculture because horses were shocked during the rodeo, said Janet Enoch, a SHARK investigator. Steve Hindi, SHARK’s president and founder, said he took video footage of horses being shocked with a prod that can deliver what he described as much 6,000 volts of painful electricity. In a video posted on the video sharing Web site...