'Dogs' in the Bible

His watchmen [are] blind, none of them know. They [are] all dumb dogs; they are unable to bark, panting, lying down, loving to slumber.

And the dogs {have a greedy appetite}; they {are never satisfied}. And they are [the] shepherds! They do not have understanding. They all turn to their [own] way, each one for his [own] gain, {every one of them}.