Exodus 9:3-6

now hear this: the hand of the LORD will fall on your livestock which are out in the field, on the horses, the donkeys, the camels, the herds, and the flocks—a horrible plague shall come. But the LORD will make a distinction between the livestock of Israel and the livestock of Egypt, so that nothing that belongs to the Israelites will die.” ’ ” The LORD set a [definite] time, saying, “Tomorrow the LORD will do this thing in the land.” And the LORD did this thing the next day, and all [kinds of] the livestock of Egypt died; but of the livestock of the Israelites, not one died.