jauría

pack (group of hounds or dogs, hunting or kept together)

“De pronto, más de un centenar de chicos levantan las persianas de 34 habitaciones, encienden las luces y responden como jauría. “Uh, uh, uh”.” — Suddenly, more than a hundred boys raise the blinds of 34 rooms, turn on the lights and respond as a pack. "Uh uh uh".

Uncertain. Possibly derived from Arabic حَُرِيَ (ḥauriya, “kind of dance”), from Ancient Greek χορεία (khoreía, “dance”). Or, possibly onomatopoeic.