And YHVH gave the people favor in the sight of the Egyptians. Moreover, the man Moses was very great in the land of Egypt, in the sight of Pharaoh's servants and in the sight of the people.
Exodus 11:3

Neither the Egyptians nor the Hebrews knew yet what the final plague would be, but the Egyptian people were already favorably disposed to give the Hebrews whatever they wanted. Only Pharaoh's heart remained hardened against them. In v7 even the animals were humbled before Israel and wanted them to go free. The dogs were more knowledgeable and obedient to God than was Pharaoh.