It conducted a systematic review of scientific literature on the detection of explosives with the help of trained animals. Training in perception learning by smell has been particularly useful for detecting landmines. The most exploited has been the dog, followed by several species of rodents (African giant rat and albino rat), more recently, have also tested invertebrate species such as bees and ants. It concludes by confirming the usefulness of animal detection, which is compatible with and complementary to other detection technologies such as physical devices by radiation.