Plague of Cattle
Just like the plague of flies, the plague of the cattle set apart the Israelites from the Egyptians. The cattle of God’s people were not affected. There were many deities that were represented as bulls but I think this plague was part of destroying the economy of Egypt as the plagues continued. We see later that Pharaoh had chariots and horses in order to pursue Moses after they flee Egypt. I like to think that God spared the horses of the Pharaoh so that His will could still prevail as He permanently pronounced His glory over Egypt when the Red Sea closed destroying the forces coming upon His faithful.