Dogs were the main audience of a commercial shown Monday night on British national television. The ad for dog food brand “Bakers” featured high-frequency sounds aimed specifically at dogs, with whistles, barking, squeaking and pings that serve to grab the pets’ attention. Dogs were the main audience of a commercial shown Monday night on British national television.The ad for dog food brand “Bakers” featured high-frequency sounds aimed specifically at dogs, with whistles, barking, squeaking and pings that serve to grab the pets’ attention. Source: Voice of Russia.