Classicly

When a great freshet takes possession of a country, and evicts the tenants of every hole, thicket, and burrow, there is an indiscriminate stampede of the animals for the driest and safest places: hares, rattlesnakes, mice, cats, and the carnivora cling together to the tops of trees, or wait in terror on the highest hills. So a prairie fire startles all the wild creatures with its sweep into a promiscuous race towards some spot that cannot be tenanted by flame. There they might observe the strange traits which shun each other in ordinary times or seek each other only when hunger demands its toll.