Albert Barnes Commentary Psalms 115:5-7

"They have mouths, but they speak not; Eyes have they, but they see not; They have ears, but they hear not; Noses have they, but they smell not; They have hands, but they handle not; Feet have they, but they walk not; Neither speak they through their throat." — Psalms 115:5-7 (ASV)

They have mouths ... - They are shaped like people, but have none of the attributes of intelligent beings.