How warm do hedgehogs have to be to survive?

In order for hedgehogs to survive, their cage temperatures have to be heated to at least 23.33 degrees Celsius (74 degrees Fahrenheit) and maintained between 23.88 and 24.44 degrees Celsius (75 and 76 degrees Fahrenheit). Lower temperatures may make hedgehogs try to go into hibernation. Cages always should have at least one thermometer, preferably two.