An underwater sniffer dog that can find human remains by standing at the bow of a boat and sniffing the air has retired - after 11 years of service. See SWNS story SWSCdog. Springer spaniel Barra, aged 12, specialised in submerged victim recovery and is Scotlands first and only underwater sniffer dog. Barra undertook 10 months of special training as a pup and has spent the last decade working with police and families all over the UK. He is based on the River Clyde with owner and handler Iain Marshall, 55, who continued to train Barra up to three times a week after he was qualified. Iain said Barras work has been instrumental in providing bereaved families with closure over the years. But he said the ageing pooch is ready to retire after having mobility issues with his back legs. Iain, who works as a boat operator, was inspired to get Barra after reading about an underwater sniffer dogs in a magazine.