What does 1 Kings 18:5 mean?

Ahab said to Obadiah, 'Let’s go through the land to all the springs and valleys. Maybe we’ll find enough grass to keep the horses and mules alive, so we don’t have to kill any of the animals.' 1 Kings 18:5 - Modern Text Bible

(Ahab is desperate to save his livestock, showing how bad the famine has gotten.)