howling
Tom oía lobos aullando en la distancia.
Tom heard wolves howling in the distance.
Los perros estaban aullando a la luna.
The dogs were howling at the moon.
Tom oyó lobos aullando en la distancia.
El quiere decir que estaba aullando.
He means that he was howling.
— O Auto da Compadecida (2000)
Un lobo está aullando.
A wolf is howling.