Exodus 9:3-5

3behold, the hand of the Lord will fall with a very severe plague upon your livestock that are in the field, the horses, the donkeys, the camels, the herds, and the flocks.

4But the Lord will make a distinction between the livestock of Israel and the livestock of Egypt, so that nothing of all that belongs to the people of Israel shall die."'"

5And the Lord set a time, saying, "Tomorrow the Lord will do this thing in the land."