הֵ֭מָּה ינועון [יְנִיע֣וּן] לֶאֱכֹ֑ל אִם־לֹ֥א יִ֝שְׂבְּע֗וּ וַיָּלִֽינוּ׃
Anden ellos errantes para hallar qué comer: Y si no se saciaren, murmuren.
Rashi on Psalms
They will roam about to eat as the dogs do all night if they are not sated, so that they can lodge out of satiety, and sleep.