Russian: gav-gav (гав-гав), there is also the verb "gavkat'" (гавкать) which is emotionally charged along with more polite-neutral "layat" (лаять). For small lap dogs, it's "tyaff-tyaff" (тяф-тяф) with corresponding verb form "tafkat" (тявкать, тяфкать). All those forms can be used as derogatory for human talk to put someone down, as a comeback in a fight.



"А ну не тяфкать!" === "shut up!"

heard from a Russian drill sergeant: "Взвод закроет пасть или будет дальше гавкать?" - "You men is gonna keep yapping or shut your mothtraps up?"