Exodus 11:7 in the World English Bible
But against any of the children of Israel a dog won’t even bark or move its tongue, against man or animal, that you may know that the LORD makes a distinction between the Egyptians and Israel.
Context
6 And there shall be a great cry throughout all the land of Egypt, such as there was none like it, nor shall be like it any more.
7 But against any of the children of Israel shall not a dog move his tongue, against man or beast: that ye may know how that the LORD doth put a difference between the Egyptians and Israel.
8 And all these thy servants shall come down unto me, and bow down themselves unto me, saying, Get thee out, and all the people that follow thee: and after that I will go out. And he went out from Pharaoh in a great anger.