The Heights - 7:166
"And when they disobeyed what was forbidden to them, We said to them: "Be despicable apes!"
"Be despicable apes" means that the disbelievers will be completely stripped of their understanding and will be spiritually likened to animals:
The Table Spread/5:60
"Say: "Shall I inform you of something worse than this in the sight of Allah? Whom Allah has cursed and wrathfully turned into apes, pigs and idolaters, those are the worst in the land and the most astray from the right path."
The Heights/7:178
Whomever Allah guides to the truth, it is he who finds the truth. And whomsoever He leads astray, they are the losers.
The Heights/7:179
And We have condemned to Hell a great number from mankind and jinn; they have hearts, but they do not comprehend; they have eyes, but they do not see; they have ears, but they do not hear. They are like livestock, even worse. And they are unaware of what is going on.
The Criterion/25:43
Have you seen the one who takes his desire as a god? Are you going to counsel him?
The Criterion/25:44
Do you really think that most of them hear or understand? They are only like livestock; nay, they are more astray.
Muhammad/47:12
Allah will admit those who believe and do righteous deeds into Gardens into which rivers flow. As for the disbelievers, they eat and live like animals and will end up in the Fire.