Using trained pouched rats to detect land mines: another victory for operant conditioning.

Researchers taught wild-caught pouched rats to smell buried land mines.

Each rat learned to scratch the ground when TNT vapor drifted from below.

The team then let the animals walk across real minefields in Mozambique.

The rats found 41 mines and 54 other bombs with almost no false alarms.

They outperformed human crews who used metal detectors.

Ohan et al. (2015) repeated the mine task on tilled soil and got the same low false-alarm rate.

The two studies together show the method works on both rough and plowed ground.

Maddox et al. (2015) used the same training steps to teach rats to find people under rubble.

All five rats reached 83 % accuracy, proving the shaping plan can switch targets.

Brown et al. (2025) warns that rare smells slow rat learning.

Mine fields have few targets, so trainers must extra-proof the final stage.

You can borrow the mine-training recipe for any scent task.

Break the final behavior into tiny steps and reinforce every correct sniff.

If the target smell is uncommon, flood the early sessions with easy trials first.