epa06724342 Detector dog Andy is seen for the last time on duty at Adelaide Airport, Adelaide, Australia, 10 May 2018. Andy is the last beagle detector dog left on mainland Australia, and he is being retired, marking the end of an era. Beagles have been used as detector dogs in Australia since 1992, but have been surpassed by Labradors.  EPA/DAVID MARIUZ  AUSTRALIA AND NEW ZEALAND OUT