Pug was a male Ferengi. Pug was a bartender at Frin's Fabulous Fortune.
In 2386, Odo spoke to Pug when investigating Quark's disappearance. When Odo mentioned Sludge Liquid Investments, Pug stopped talking to Odo when Bakke, one of Yrena's sons threatened him. Pug was later killed by Yrena's sons and his body discovered by Odo. (DS9 eBook: I, The Constable)