Two yearling heifers were killed by wolves near Absarokee on March 25, prompting Wildlife Services to set leg-hold snares near the cattle carcasses.The same Rosebud pack killed a yearling on a neighboring ranch along Fiddler Creek at the base of the Beartooth Front two months ago, according to John Steuber, state director of Montana Wildlife Services. The pack was also blamed for killing two calves last year — one in May and one in July.