The Standard call is used by state, federal, and private professional trappers all over the USA. Coyotes, foxes, bobcats, bear, lions, deer, elk, and scores of other predators come to look. It makes mouse squeaks, jackrabbit and cottontail rabbit squalls, coyote pup squeals, and other necessary sounds. If you call predators, you need a Crit'RoCall Standard. Size: 3" x 7/8".