'Dogs' in the Bible

Blind are his watchmen -- all of them, They have not known, All of them are dumb dogs, they are not able to bark, Dozing, lying down, loving to slumber.

And the dogs are strong of desire, They have not known sufficiency, And they are shepherds! They have not known understanding, All of them to their own way they did turn, Each to his dishonest gain from his quarter: