A dog awaits his handler’s instructions on the first day of the 2016 International Sheepdog Trail at Sandilands farm, Tywyn (Photo: Deri Jones) Sheepdog trials 2017 APRIL 2017 Apr 14-15: Bodfari sheepdog trial, Bodfari Trials Field, LL16 4DE. Apr 14 – 7.30am start, two Open sessions (5 entry), two 2nd class sessions (3 entry).