Training a rat for search and rescue is a lot like training a dog. It’s all about giving rewards when the animal finishes tasks.
First, a rat learns to run to its trainer when it hears a beep. That earns it a treat—rat food mixed with banana and avocado. Ew!
Next, the rat learns to pull a bell on its backpack once it finds a survivor. In a real rescue situation, pulling the bell will send a location signal to human rescuers. At that point, they can track the survivor’s location. How? The rat’s backpack has a GPS tracker.
The backpack might also have a microphone and speaker. This would allow the rescuers to hear and talk to the survivor.