Giant Rat. African giant pouched rats are used to sniff out deadly landmines in Mozambique and Tanzania.. Rats are the best kind of sniffers, they have near the intelligence of dogs, plus they're probably light enough so they don't trigger the bomb too. They do it f Giant Rat African giant pouched rats are used to sniff out deadly landmines in Mozambique and Tanzania Rats the best kind of sniffers they have near intelligence dogs plus they're probably light enough so don't trigger bomb too They do it f