COLUMBUS, Ohio—In order for an animal tranquilizer gun to work, it has to fire darts at a rather particular speed. Too slow, and the dart bounces off the animal without injecting the sedative. Too ...

Animal Services officers from the Napa County Sheriff’s Office twice used a stun gun on a stray pit bull and later shot it with a tranquilizer dart Tuesday morning, authorities said. The Sheriff’s ...

A powerful veterinary tranquilizer showing up in the street drug supply is putting new pressure on hospitals and treatment centers in Western Pennsylvania, according to local doctors and providers.

The donation is in response to the fatal shooting of a deer by police earlier this month in an East Oakland backyard. The incident was captured on video tape -- prompting dozens of complaints. In ...