na.vach describes the barking that mute dogs are said to be unable to do.

The attested use describes the barking that mute dogs are unable to perform in Isaiah 56:10.

1. Barking by dogs · dominant

   In Isaiah 56:10, the Qal infinitive construct occurs in the statement about mute dogs that cannot perform this action; the APB renders the clause “they cannot bark.”

   Isaiah 56:10

In the Anselm Project Bible: In Isaiah 56:10, the APB presents the action in “they cannot bark.” The verse is read as a whole, but this clause plainly corresponds to the dogs' stated inability.