Authorities are asking for your help in locating a dog they believe was involved in killing another dog in Grover Beach late yesterday morning. The attack happened just after 9:30 on Farroll Road near Hero Park. Witnesses described a larger dog wearing a red collar attacking a smaller dog that was being walked by its owner. Police say the injured dog died from its injuries. County animal services is taking charge of the investigation. Anyone with information about this incident is asked to contact Animal services or the Grover Beach P.D…