In temperament the Puli is lively, alert and attentive, closely attached to its own people and wary of strangers. It is quick to bark at anything unusual, which has made it a capable watchdog as well as a herder.
The Puli is a compact, squarely built dog with fine bones beneath a coat that makes it look far heavier than it is. The cords hang over the whole body and usually hide the eyes, and the tail curls tightly over the back so that it merges into the coat. Solid black is the usual colour, but grey, fawn with a dark mask and white also occur. It moves with a short, quick, springing step.
The Puli remained a working dog of Hungarian shepherds for centuries, valued for speed and stamina rather than size. On the plains it often worked beside the much larger Komondor and Kuvasz: the big dogs guarded the flock against wolves and thieves, while the nimble Puli gathered and drove the sheep. In the early twentieth century, Hungarian breeders began recording and standardising the breed, and it later spread abroad with emigrants and enthusiasts. In the nineteen-thirties, the United States Department of Agriculture imported Pulik to test them as herding dogs.